Authorities have arrested a suspect accused of killing a man found dead in Borrego Springs home Saturday morning. 

Mark Peter Waugh, 53, has been booked into the Vista Detention Facility on a single count of murder, according to the San Diego County Sheriff’s Department (SDSO).

The incident happened Saturday at approximately 7:45 a.m., deputies said. A man, identified as Borrego Springs resident Brett Leslie Boynton, 52, was found unresponsive and lying on the floor of a home in the 400 block of Verbena Drive. Both the men were residents of the Verbena Drive address, deputies said. 

Deputies from the SDSO’s Borrego Springs office initially received a report of a possibly dead man inside the residence.

Deputies said the man had suffered “obvious signs of trauma,” and homicide detectives were called to take over the investigation.

The cause of death was blunt force trauma with possible strangulation, deputies said.

The investigation is ongoing. The San Diego County Medical Examiner’s office will perform an autopsy on the man to determine his cause and manner of death. Those details are forthcoming.

Anyone with information on this case can call the SDSO’s Homicide Detail at (858) 974-2321 or (858) 565-5200, or Crime Stoppers at (888) 580-8477.

The 10,000th Syrian refugee will arrive in the U.S. on Monday — meeting a humanitarian goal the Obama administration set last year.

"On behalf of the President and his Administration, I extend the warmest of welcomes to each and every one of our Syrian arrivals, as well as the many other refugees resettled this year from all over the world," National Security Advisor Susan Rice said in a statement.

Rice did not announce the name of the refugee or where in the U.S. that person will be resettled. But she said the feds reached President Obama's goal to admit 10,000 Syrians this fiscal year — a month ahead of deadline.

More than 4.8 million Syrians have fled since a civil war began tearing their homeland apart — but less than two percent of them have landed in the U.S., according to the State Department, NBC News reported.

Almost half of the new Americans are 14 and under and 62 percent are under age 20, the feds said. The top two destinations in the U.S. for the Syrians are Michigan, which has long been a destination for Syrian immigrants, and California.

A drug already on the market to treat worm infections and another being tested against liver diseases may also help treat Zika virus infections, researchers reported Monday.

The findings are a rare bit of good news about Zika, which has caused epidemics across Latin America and the Caribbean, and smaller outbreaks in Florida, the Pacific and southeast Asia, NBC News reported.

Zika has caused smaller epidemics of birth defects, notably brain damage that can cause miscarriages or profound developmental injuries in babies.

The team at the National Institutes of Health (NIH), Johns Hopkins University and Florida State University looked first in a library of existing drug compounds for products that might act to stop Zika from killing brain cells and perhaps stop it from replicating itself.

One of the drugs is Nicosamide used to treat worm infections, and the other is Emricasan to treat hepatitis C.

Mounds of sand line the B Street Pier along San Diego's Embarcadero, just waiting for a sand sculptor to get inspired.

The delivery of 300 tons of sand for this weekend's U.S. Sand Sculpting Challenge took more than a dozen truckloads, according to organizers.

The event kicks off Friday, Sept. 2 is one of our Things to Do This Labor Day Weekend.

San Diegans can stroll along the pier and watch the sandcastles gradually appear.

Or, for the very-curious, a professional sculptor will talk at 2 p.m. Monday about how to build and create a masterpiece on your next visit to the beach.

Tickets are $13 for adults and $9 for kids and seniors. Save $1 on both by buying tickets in advance online.

SI Monday Morning Quarterback writer Albert Breer reports Tony Romo has no ligament damage in his back and that he could be training in three weeks.

Breer sent two Romo-related tweets Monday morning, the first saying "One area where Cowboys and Tony Romo dodged a bullet -- No ligament damage in Romo's back, I'm told. Should be training again in 3-6 weeks."

Breer followed that tweet with another further dissecting when Romo could see game action.

"If Romo's ready to train again in 3 weeks, could be back playing in 6 weeks. If that takes 6 weeks, could be 10 weeks before he plays," Breer tweeted.

Either way, it looks like he could return anytime between the Week 5 match-up against the Cincinnati Bengals on Oct. 9 or the Week 9 match-up with the Cleveland Browns on Nov. 6.

Given Romo's history with recovery and playing with injury, it's hard to imagine him taking several weeks between training and playing in a game.

In any case, it looks like Romo will miss at least a quarter of the season with his latest back injury.

The widow of an anti-government activist who helped take over an Oregon wildlife refuge and was later killed in a confrontation with law enforcement says her husband's civil rights were violated and she intends to sue, her lawyer confirmed Monday.

Robert Lavoy Finicum's pursuers were "motivated by political reasons" when they fatally shot him on Jan. 26, attorney Brian Claypool said in a statement.

Two of the FBI agents involved in the fatal confrontation on a snowy stretch of Highway 395 north of remote Burns, Oregon are now under investigation for allegedly lying about firing shots at the truck Finicum was driving, Claypool added, NBC News reported.

Both the FBI and the Oregon State Police declined to comment on the threatened lawsuit. A 54-year-old Arizona rancher, Finicum was part of a militia group led by Ammon Bundy that occupied the Malheur National Wildlife Refuge on Jan. 2.

The second-largest school district in the state of California returns to class Monday for the 2016-2017 school year.

For thousands of students in the San Diego Unified School District, summer is officially over.

Superintendent Cindy Marten will join board members and faculty at University City High School to greet students back to class.

The location was chosen because of new renovations to the campus including new athletic fields and courts, a new area for buses to pick up students and new solar panels in the parking lot.

Longtime Hillary Clinton aide Huma Abedin announced Monday that she was separating from her husband, former congressman and onetime New York City mayoral candidate Anthony Weiner.

"After long and painful consideration and work on my marriage, I have made the decision to separate from my husband," Abedin said. "Anthony and I remain devoted to doing what is best for our son, who is the light of our life. During this difficult time, I ask for respect for our privacy."

The announcement by Abedin, who currently serves as the vice chairwoman of Clinton's presidential campaign, comes hours after a New York Post report that Weiner was again sending sexually suggestive messages with at least one woman.

The photos and messages were published in the Post late Sunday and showed shots of Weiner either shirtless or in his underwear. One photo shows a child that the Post reports was his toddler son. NBC 4 New York has not been able to independently confirm the photos.

Weiner told the Post he had been "friends for some time" with the woman and that the conversations were private. He deleted his Twitter account hours after the Post hit newsstands on Monday.

NBC 4 New York has reached out to Weiner for comment. 

Abedin and Weiner have been living separate lives for some time, a close friend of hers told NBC News. 

“This did not happen overnight. This has been brewing,” the friend said. 

Notably, in recent months, Abedin has not been seen wearing a wedding ring. 

A second friend told NBC News that Abedin, who has been in the Hamptons for several days already, will likely lay low and focus on spending time with her family. 

Weiner's congressional career was derailed when he tweeted an explicit photo of himself to a woman in 2011. He initially denied he had posted the image but later admitted to sexting with "about six women over the last three years" before resigning from Congress.

Weiner attempted to re-enter the political fray in 2013 as a candidate for New York City mayor and briefly polled as the leading Democratic candidate that summer. But Weiner revealed that he had sent explicit photos and messages to three more women since 2012, some under the alias "Carlos Danger," and his candidacy floundered. He lost the Democratic mayoral primary with less than 5 percent of the vote.

Donald Trump, Hillary Clinton's opponent in the presidential election, praised Abedin's decision to separation on Monday, calling it a "very wise decision" in a statement to The New York Times. 

"I only worry for the country in that Hillary Clinton was careless and negligent in allowing Weiner to have such close proximity to highly classified information," the statement reportedly said.

A collision involving a San Diego Police vehicle closed a major intersection in the Cortez Hill area of downtown Monday.

The collision at 4th Avenue and Ash Street occurred at 5:18 a.m.

One person was trapped.

The crash involved an unmarked SUV owned by the San Diego Police Department.

A gray Ford Escape appears to have suffered damage to the passenger side door. Two people were in the Ford.

No other information was immediately available.

Check back for updates on this breaking news story. 

An 'armed and dangerous' suspect wanted in connection with two violent sexual assaults in the San Diego area is still at-large, and police are asking for the public's helping in finding the man. 

Jeremiah Williams, 24, is wanted for two recent attacks: the University City sex assault and another assault that happened the day after at a Motel 6, according to San Diego Police Department Capt. Brian Ahearn. 

Authorities identified Williams as the suspect last Wednesday, but have yet to find and arrest him. 

Williams is described as being 5-foot, 11-inches and 180 pounds. He has the numbers "210" tattooed on his right wrist and an outline of the State of Texas tattooed on his left forearm. He also has wings tattooed on both upper arms. 

Anyone who sees Williams is asked to call 911. Police believe he is still in the San Diego area. 

Physical evidence from the scene of the first University City sex assault linked Williams as the suspect, Ahearn said. 

The University City sex assault happened on Saturday, Aug. 13 when a woman was attacked at the Venetian Condominiums on Nobel Drive.

The woman had been dropped off outside the complex around 10:30 p.m. and was walking to her apartment when she thought someone was following her.

Before the victim could unlock her door, the man knocked her to the ground and asked her for money at gunpoint. After giving him the money, the woman was dragged into her apartment where police say she was beaten and sexually assaulted.

Three days after that incident, San Diego Police were called to Sharp Memorial Hospital for a report of a separate attack. A 23-year-old woman told police she had been violently sexually assaulted on Sunday, Aug. 14 at a Motel 6 on Alvarado Canyon Road in Mission Valley.

"The suspect, who she had recently met, entered her room choked and sexually assaulted her and then hit her in the head with a hand gun," Ahearn said.

After the interview, sex crimes detectives went to the motel and collected evidence.

During their investigation, detectives found that officers initially responded to the incident at the motel as a report of a man hitting a woman. 

Witnesses told police Sunday night they heard the victim yell for help, and the suspect fled on foot.

The Motel 6 manager told NBC 7 that the victim smashed a window in the room and drove off in a car before police arrived at the scene. 

In a strange twist, investigators say police officers had the suspect in handcuffs after the second attack but weren't aware of the allegations until days later when the victim came forward.

Authorities located the suspect in a nearby canyon with a hand gun, Ahearn said. Initial statements given to California Highway Patrol (CHP) officers placed Williams at the scene, and he was cited with a misdemeanor gun charge and released.

It was only on Tuesday that police linked Williams as the suspect in the motel sex assault. 

Physical evidence and victim interviews linked Williams to the Motel 6 sex assault and to the University City sex assault, Ahearn said.

The suspect remains at large; he is considered armed and dangerous. He has a criminal background in California and Texas. 

A manhunt was underway in northwestern Louisiana early Monday for three "dangerous" inmates who scaled razor-wire fences to escape prison over the weekend.

The trio escaped from the Natchitoches Parish Detention Center on Saturday night, jumping over two rolls of razor-wire, NBC News reported.

The Natchitoches Parish Sheriff's Office identified the inmates as Michael Elliot, a 24-year-old convicted of theft; Walshea Mitchell, 35, in prison for armed robbery; and Willie Ethridge, 34, serving time for murder and armed robbery.

While the men were not armed at the time of their escape they should be considered dangerous and "extreme caution should be used if seen," the sheriff's office said in a statement.

Fox News Channel says Andrea Tantaros is not a "victim" but "an opportunist" in its response to the sexual-harassment lawsuit filed last week by the former Fox News host.

In that response, filed Monday in New York, the network is calling for arbitration which it says is in accordance with her employment agreement. The network notes that she is already a party to pending arbitration after having been suspended by Fox, which has accused her of breaching her employment agreement by writing a book without prior authorization by the network.

Fox News claims it learned of Tantaros' book, "Tied Up in Knots ... How Getting What We Wanted Made Women Miserable" in March, a few weeks before it was published.

"This Court should compel Tantaros to proceed in the arbitration proceeding that is already underway," Fox News contends.

Tantaros last week sued the network, its ousted chairman and other top executives, claiming they retaliated after she detailed unwanted sexual advances made by her onetime boss, Roger Ailes. Tantaros, who described Fox in her lawsuit as a "sex-fueled, Playboy Mansion-like cult," said after she complained last spring about Ailes, one of his top deputies, William Shine, warned her that Ailes was a "very powerful man" and that she "needed to let this one go."

Shine was promoted to co-president of Fox News after Ailes resigned last month amid sexual harassment complaints by another former anchor, Gretchen Carlson, who claimed in a lawsuit of her own that she was fired for refusing his sexual advances. He has denied those accusations.

Commenting on Fox's filing, Tantaros' lawyer, Judd Burstein, said, "Fox's right to arbitrate is a legal issue on which I am confident Ms. Tantaros will prevail." He added, "If Mr. Shine and his minions are innocent, why do they want this dispute to be resolved in the shadows (with arbitration)?"

Tantaros, a former panelist on "The Five" who was moved to co-host the lesser-viewed "Outnumbered," was pulled off the air a few weeks ago. She claimed that Fox executives used the dispute about her book to try to silence her.

While she claims the network has retaliated against her, "she concedes that she has not been terminated and remains on Fox News' payroll," the network says.

Tantaros says she was subjected to "demeaning conduct," as when Ailes allegedly asked her twice to "turn around so I can get a good look at you," adding, on one occasion, "Come over here so I can give you a hug."

But when she complained, network executives retaliated by cutting her air time and planting news stories meant to tarnish her image, her lawsuit claims.

The Fox News response says her "unverified complaint ... bears all the hallmarks of the 'wannabe'...."

A 25-year-old man is now being held in jail on suspicion of fatally shooting a Skyline teenager as the teen was standing on a street corner earlier this month.

San Diego police investigators on Monday identified the suspect as Deshaun Prescott, who was already in custody for a probation violation. Investigators filed paperwork to add a charge of murder against him.

Investigators said another suspect in the Aug. 2 killing of Greggory Davis, 18, has not yet been identified.

"We do have one other male we're working to try to identify. So, if the public can give us any assistance in identifying who Mr. Prescott's associate was that night, we could potentially get another murderer off the streets," said Manny Del Toro, with San Diego police.

Davis, who had just graduated high school, was killed and another man was injured in a shooting at 5:40 p.m. on 61st and Alderley streets.

He was standing with a group of people near the intersection when they were approached by two men on foot. The suspects opened fire on the group using handguns and then ran eastbound on Alderley, police said.

Davis was shot in the upper body. The second victim, identified as 25-year old Avery Ealy, was shot once in the leg.

Both victims were rushed to Paradise Valley Hospital in National City, where Davis died.

After the shooting, a woman who lived down the street from Davis set up a memorial in her front yard, where other neighbors came to mourn.

"He was the sweetest kid," neighbor Carrie Heard reflected on Monday. "He didn't deserve this at all."

Further information on a possible motive was not released. Police believe the shooting was gang related, but they say Davis was not part of a gang; the suspects are accused of firing toward other gang members.

Anyone with information is asked the San Diego Police Department’s homicide unit or Crime Stoppers at 888-580-8477.

Police officers teamed up with local radio station The Mighty 1090 and The Habit Burger Grill on Monday for a fundraiser to support the family of fallen San Diego Police Officer Jonathan “JD” De Guzman.

The fundraiser is being held from 2-7 p.m. outside the San Diego Police Department (SDPD) headquarters on Broadway in Downtown San Diego.

Officer De Guzman, 43, was killed in the line of duty on July 28 after being shot multiple times. His partner Officer Wade Irwin was injured in the attack and is continuing to recover.

On Monday, hosts Scott Kaplan and Billy Ray Smith of The Mighty 1090 were broadcasting live from outside the headquarters to raise money for the family of both officers. Attendees can also buy burgers from a food truck of The Habit Burger Grill.

All of the proceeds will go to the Officer De Guzman & Officer Irwin Family Fund.

You can also make an online donation here to Office De Guzman’s Family. In the notes for the online donation, indicate “Officer Jonathan De Guzman”.

You can donate to Officer Irwin’s family here.

Two U.S. pilots were freed on bail Monday in a Scottish court after they were arrested as they were preparing to fly from Scotland to New Jersey while allegedly under the influence of alcohol, court officials told NBC News.

The men — identified in court documents as United Airlines pilots Carlos Roberto Licona, 46, of Humble, Texas, and Paul Brady Grebenc, 35, of Columbus, Miss. — appeared in Paisley Sheriff Court on charges that they violated a section of Britain's Railways and Transport Safety Act that says pilot can't exceed a blood-alcohol level of .02.

The pilots were arrested Saturday morning as they tried to check in at Glasgow Airport. Authorities wouldn't say exactly how much alcohol was registered in their systems.

The flight, destined for Newark International Airport with 141 passengers aboard, was supposed to have departed at 9 a.m. (4 a.m. ET) Saturday, but it didn't take off until 6:45 p.m. after the airline secured a replacement crew, Erin Benson, a spokeswoman for United Airlines, told NBC News.

San Diego County Sheriff’s Department (SDSO) officials confirmed Monday that a once-hospitalized man suspected in the mysterious, high-profile slayings of three San Diegans has been returned to custody.

SDSO media relations director Jan Caldwell told NBC 7 that Carlos Mercado, 31, improved following a recent transport to the hospital and was returned to custody.

In July, Mercado was transported from San Diego Central Jail in downtown San Diego Tuesday afternoon to UC Medical Center. Caldwell said Mercado, along with his cellmate, Abel Martinez, 52, were observed by deputies to be in "medical distress".

NBC 7's source close to the investigation believes the inmates overdosed.

Martinez's current status is unclear. NBC 7 will update this story when we learn more. 

Mercado is accused of killing brothers Salvatore “Sal” Belvedere, 22, and Gianni Belvedere, 24, and Gianni’s fiancée, Ilona Flint, 22.

The killings began with a shooting on Christmas Eve 2013 in the parking lot of Westfield Mission Valley mall.

A judge ruled in July that Mercado would stand trial in the triple homicide case, with his trial set to begin on April 3, 2017.

In February 2016, Mercado pleaded not guilty to the slayings.

At that time, San Diego County Deputy District Attorney Brian Erickson said the District Attorney’s office would seek the death penalty if Mercado’s trial moved forward and if he is convicted.

Over the past two-and-a-half years the triple homicide case has seen many twists and turns.

Prosecutors have said it does not appear Mercado was in any way connected to the victims and that the killings are believed to have been random, or perhaps the result of some type of “road rage” incident. The killings do not appear to have been a hit, as has been speculated, prosecutors said in February.

Still, the motive for the slayings remains shrouded in mystery.

Several months ago, Mercado’s defense attorney Gary Gibson said he was disappointed with the DA’s decision to pursue the death penalty in this case given Mercado’s history of mental illness. Gibson said his client is a “deeply damaged individual with significant mental health issues.” However, Erickson argued Mercado’s mental state is directly linked to the case, which includes depression “based on his situation.”

Gibson said the case will be difficult to prove at trial because prosecutors are struggling to pin down a motive.

On Dec. 24, 2013 Flint and Sal were found critically shot inside their car parked outside a Macy’s department store at Westfield Mission Valley mall in San Diego’s Mission Valley area. Flint, who called 911 to report the shooting and their location, died at the scene. Sal was hospitalized and died a few days later.

Flint’s fiancé and Sal’s brother, Gianni, went missing around the same time of the Christmas Eve killings. On Jan. 17, 2014 police found Gianni’s badly decomposed body stuffed into the trunk of his own car parked at a shopping center in Riverside, California, more than 100 miles away from San Diego. He, too, had been shot to death.

For six months, police reported no breaks in the baffling triple homicide case.

On June 20, 2014 the San Diego Police Department confirmed officers had arrested Mercado as the suspect in the three slayings. Mercado pleaded not guilty to three counts of first-degree murder.

At a pretrial in early September 2014, DNA evidence emerged linking Mercado to Gianni’s car and the bloody Riverside crime scene, while ballistics evidence linked a gun registered in Mercado’s name to the deadly shootings of Flint, Sal and Gianni. Prosecutors also presented evidence found on Mercado's phone and computers.

Also in early September 2014, search warrants obtained by NBC 7 revealed the exhaustive investigation into the triple homicide case, but no clear motive for the killings.

In December 2014 the families of the three victims filed a wrongful death lawsuit against Westfield, LLC, accusing the Mission Valley mall of negligence in the deaths of Flint and the Belvedere brothers, claiming the mall failed to provide sufficient lighting and monitoring security cameras in the area to keep patrons safe. That lawsuit also listed Mercado as a defendant, accusing him of malice and oppression in the killings.

On Nov. 3, 2014 a San Diego judge ruled Mercado was not competent to stand trial in the triple killings, and ordered he be treated at Patton State Hospital for three years until he was found competent to assist in his own defense.

That ruling came after reports submitted by two psychiatrists and one psychologist diagnosed Mercado as schizophrenic, psychotic and suffering from catatonic depression, Mercado’s attorney said at the time.

In September 2015, Mercado was returned to San Diego Central Jail after evaluators from Patton State Hospital found him competent to stand trial. The defense then requested a competency trial for Mercado.

On Dec. 14, 2015 a judge ruled Mercado was competent to stand trial.

When Mercado’s trial date was set last week, a judge also ordered Mercado to appear in court this October for a status conference.

Meanwhile, Mercado's cellmate, Martinez, is also accused of murder.

Martinez was convicted in the shooting his ex-girlfriend, Leila Farmer, and her boyfriend, Eufracio Alberto Enriquez, in March 2014 at a home in Dehesa Valley near Alpine. Enriquez died in the shooting.

Inmate records indicate Martinez was scheduled to appear in court days after the hospitalization. NBC 7 reached out to Martinez's attorney, Thomas Bahr, at the time. Bahr said he had no comment.