The teenage shooter who opened fire at Saugus High School died Friday of a self-inflicted gunshot wound as investigators seized unregistered firearms from his home and tried to determine the origin of the handgun used in the deadly attack.

Authorities say Nathaniel Berhow carried out the violence at the Santa Clarita campus on his 16th birthday after being dropped off at school by his mother. School surveillance video reviewed by law enforcement shows a boy pulling a pistol from his backpack and opening fire in the quad, killing a 15-year-old girl and a 14-year-old boy and wounding three others in an attack that lasted 16 seconds.

At one point during the gunfire, the weapon jammed and the shooter cleared the firearm before he continued firing. He appeared to know how many shots he had fired and left the final round for himself, ending the attack with a gunshot to his head, said Los Angeles County Sheriff Alex Villanueva. The teen died of that wound Friday afternoon. Authorities said his mother was with with him at the hospital.

Investigators think the attack was planned but said they do not suspect specific students were targeted.


1 / 42 Sisters Isabella, 16, and Sophoia Esser, 12, hug Nov. 15 at Central Park in Santa Clarita. Their school remained closed a day after the shooting. (Kent Nishimura / Los Angeles Times) 2 / 42 Saugus High School freshman Haley Stuart hugs her family after placing flowers Nov. 15 at a memorial. (Kent Nishimura / Los Angeles Times) 3 / 42 Vicky Villarreal and Matthew Arauz, 16, pay their respects at a memorial at Central Park for the Saugus High School shooting. (Kent Nishimura / Los Angeles Times) 4 / 42 Hailey Stuart, a freshman at Saugus High School, and her sister Ashley place flowers at a memorial. (Kent Nishimura / Los Angeles Times) 5 / 42 Sheriff’s vehicles and deputies outside Saugus High School, which remained closed Nov. 15. (Kent Nishimura / Los Angeles Times) 6 / 42 Xavier Martinez hugs his son, Sebastian Martinez, 12, as people place flowers and pay their respects at a growing memorial at Central Park in Santa Clarita. (Kent Nishimura/Los Angeles Times) 7 / 42 Sebastian Martinez, 12, places a football at the memorial in Santa Clarita. (Kent Nishimura/Los Angeles Times) 8 / 42 Yvette Mojica, 16, a Saugus High School student who was in class at the time of the shooting and locked down for two hours, visits a makeshift memorial at Central Park. (Irfan Khan / Los Angeles Times) 9 / 42 Tom, left, and Madlyn Gibson, whose children went to Saugus High School, prepare a ‘Saugus Strong’ banner to be placed near a makeshift memorial at Central Park for the victims of the shooting in Santa Clarita. (Irfan Khan / Los Angeles Times) 10 / 42 Christine Hirst, a teacher in the school district, weeps at the makeshift memorial at Central Park for the victims of Saugus High School shooting in Santa Clarita. (Irfan Khan / Los Angeles Times) 11 / 42 Jessica Dumont, with her 1-year-old daughter, Juliana Sanchez, pays her respects at a memorial. (Irfan Khan / Los Angeles Times) 12 / 42 Two mourners pay their respects at a memorial at Central Park for the victims of Saugus High School shooting in Santa Clarita. (Irfan Khan / Los Angeles Times) 13 / 42 Melissa Perez, with her dog, Bandit, offers prayers and respect Nov. 15 at a makeshift memorial at Central Park for the victims of Saugus High School shooting in Santa Clarita. (Irfan Khan / Los Angeles Times) 14 / 42 Dylan Reynoso, a 16-year-old Saugus High School student, is reunited with father Marco Reynoso, mother Yvonne and grandmother Angie Razo. (Al Seib / Los Angeles Times) 15 / 42 Students are escorted by police from the Saugus High campus. (Al Seib / Los Angeles Times) 16 / 42 Anna Fineberg with her mother, Jessica. The 14-year-old was among those evacuated from Saugus High School after Thursday’s shooting. (Brian van der Brug/Los Angeles Times) 17 / 42 Students are in tears while leaving the Saugus High campus. (Al Seib / Los Angeles Times) 18 / 42 Students evacuated from Saugus High board buses to a reunification area at Central Park. (Brian van der Brug / Los Angeles Times) 19 / 42 Saugus High 10th-grader Ella Cabigting is hugged by her father, Emerson. (Al Seib / Los Angeles Times) 20 / 42 Students are evacuated. (Brian van der Brug / Los Angeles Times) 21 / 42 Abraham Tovar, right, hugs fellow Saugus High student Katie Garibay as they join friends at the reunification area. (Brian van der Brug / Los Angeles Times) 22 / 42 Student Kiki Egetoe, 17, embraces her mom, Patty, and dad, Bob. (Brian van der Brug / Los Angeles Times) 23 / 42 Students evacuate. (Brian van der Brug / Los Angeles Times) 24 / 42 Students and family members leave Santa Clarita’s Central Park in the aftermath of the deadly shooting. (Brian van der Brug / Los Angeles Times) 25 / 42 Police officers escort groups of students away from Saugus High School. (Al Seib / Los Angeles Times) 26 / 42 Police officers escort groups of students away from Saugus High. (Al Seib / Los Angeles Times) 27 / 42 Laura Schooping-Medina, left, comforts daughter Hannah Schooping, center, and friend Lauren Farmer outside Saugus High. (Al Seib / Los Angeles Times) 28 / 42 Students board a bus. (Brian van der Brug / Los Angeles Times) 29 / 42 An L.A. County sheriff’s deputy leads students from Saugus High. (Al Seib / Los Angeles Times) 30 / 42 Parents are reunited with their children near Saugus High. (Al Seib / Los Angeles Times) 31 / 42 Students are escorted from the campus. (Al Seib / Los Angeles Times) 32 / 42 A mother and daughter embrace outside Saugus High. (Al Seib / Los Angeles Times) 33 / 42 Police escort students as they board buses from Saugus High to a nearby park to be reunited with their parents. (Al Seib / Los Angeles Times) 34 / 42 A sheriff’s deputy outside Saugus High. (Luis Sinco / Los Angeles Times) 35 / 42 People gather for a “Night of Prayer” at Grace Baptist Church in Santa Clarita on Thursday night. (Luis Sinco / Los Angeles Times) 36 / 42 The prayer vigil. (Luis Sinco / Los Angeles Times) 37 / 42 People comfort one another. (Luis Sinco / Los Angeles Times) 38 / 42 At church. (Luis Sinco / Los Angeles Times) 39 / 42 An injured person is wheeled to an ambulance after Thursday’s shooting in Santa Clarita. (KTLA) 40 / 42 Two students were killed and three injured in the campus shooting. (Al Seib / Los Angeles Times) 41 / 42 Police converge on a home in the 22000 block of Sycamore Creek Drive in Santa Clarita during the search for the shooter. (KTLA) 42 / 42 An aerial view of the exterior of Saugus High School in Santa Clarita. (KTLA)

“He seemed very familiar with firing the weapon,” Villanueva said. He added that the shooting was not a “spur of the moment act,” but officials have not determined a motive.

Federal and state investigators are also trying to determine whether the handgun used by the suspect was made from parts purchased separately and then assembled, law enforcement sources told The Times.

These so-called ghost guns are unserialized weapons manufactured from parts that can be ordered through the mail or machined parts acquired from underground makers.


The sources said the gun design appears to be unusual but emphasized that officials don’t know its origins at this time.

Investigators found several firearms during a search of the teen’s home, and some were not registered. Villanueva did not specify what types of guns were recovered. The L.A. County Sheriff’s Department is working with the federal Bureau of Alcohol, Tobacco, Firearms and Explosives to trace the origins of the .45-caliber handgun used in the shooting.

Deputy James Callahan, a school resource officer at Saugus, said he was on his way to campus when the shooter call went out Thursday. When he arrived minutes later, he rushed to help students wounded in the quad along with other off-duty law enforcement officers who were already rendering aid.

“When you’re a school resource deputy, you take a lot of pride in keeping your campus secure,” he said. “You never think a tragic thing like this is going to happen.”


A day after the gunfire erupted, students, parents and law enforcement officers described the tightknit community as being in a state of mourning. Many continued to struggle with the violence that had unfolded.

Xitlali Rodriguez had been sitting in her first-period digital photo class when she heard the gunshots ring out. The classroom door was wide open, she said, and she was just one building away from the quad where the shooter opened fire.

The 16-year-old thought she was going to die. The students did their best to keep a low profile: They closed the door, shut off the lights and hid in the room. Everyone was texting family and friends. She watched as some cried silently while others hugged, trying to comfort one another.

Rodriguez said she had to talk to the emotional support counselors at school, who told her she was suffering from acute post-traumatic stress disorder.


“I’m thankful to be around family, and I’m happy that I am safe,” she said, “but I’m scared to go to school or large public areas now, and no one should have to feel like that.”

Coroner’s officials on Friday identified the 15-year-old girl who died in the shooting as Gracie Anne Muehlberger and the 14-year-old boy who died as Dominic Blackwell.

Two teenage girls who were wounded in the shooting remained hospitalized Friday but are expected to recover from their injuries. A 15-year-old girl arrived Thursday at Providence Holy Cross Medical Center with a gunshot wound below her belly button, doctors say. The bullet, which had lodged in her hip, was removed by surgeons.

A 14-year-old girl arrived at the same hospital with gunshot wounds to her left shoulder and lower abdomen. Both girls are expected to be released in the next day or two, doctors say. The teens are staying in the same room and are surrounded by their families.


“Once we were done with the work-up, they were both sitting up, smiling and talking,” Dr. Boris Borazjani said during a morning news conference at the hospital.

One student, a 14-year-old boy, was treated and released Thursday afternoon from the hospital. His specific injuries were not provided.

Kaitlin Holt never expected to experience a school shooting during her first teaching job — or to have to act as a first responder.

But that’s what the 26-year-old Saugus High School choir teacher did Thursday morning. Holt’s students had been listening to a recording of themselves singing at a jazz festival when several students ran into her classroom. They told her they had heard gunshots.


“It was just fight or flight,” Holt said. “I didn’t have time to think of anything except of survival for my students.”

She locked and barricaded the door, moving her students into an office within the classroom. Once inside, one of the students who had run in told Holt that she thought she had gotten shot.

“Her adrenaline was so high she didn’t know she had been shot,” Holt said.

The girl, a freshman, had been shot on her right side and on her left shoulder. Months before, during a school staff meeting, Holt had watched a tutorial on how to use a gunshot wound kit. She left her office to get a kit from her classroom and wrapped the wound on the girl’s side while putting pressure on the shoulder wound.


Meanwhile, a senior student called the police to let them know about the wounded student. Another senior guarded the door of the office with a fire extinguisher. After about 20 minutes, police came into the classroom and told the students they could leave the room. Though the incident shook Holt, she said it hasn’t deterred her from wanting to teach.

“I just don’t think this should be part of my job,” she said.

All schools in the William S. Hart Union High School District were closed Friday out of respect for the victims and their families. However, district counselors were being made available for students and staff at Grace Baptist Church, Deputy Supt. Mike Kuhlman said.

“The gun violence experienced across our nation, and all too often on school campuses, has prompted our district, like others, to conduct staff and student trainings for these unthinkable events,” he said in a statement. “We take the training seriously; we prayed that we would never need it. Yet today, our brilliant staff bravely and vigilantly went into action.”


Detectives have conducted 40 interviews and still have six to go in their efforts to piece together what led up to Thursday’s shooting. They’ve also searched the teenage suspect’s papers and computer hard drives for any clues as to a motive, but so far, none has emerged. The teen didn’t leave behind a suicide note or manifesto detailing any plans, Sheriff’s Capt. Kent Wegener said Friday.

Friends and neighbors of the suspect were stunned, saying the teen showed no signs of aggression. He ran junior varsity cross-country and helped younger members in his Boy Scout troop. Classmates described him as being very intelligent, an academic achiever who often received the highest marks in his classes.

“He was pretty funny too,” Brooke Risley, 16, said. “He had a higher-level type of humor that often I couldn’t even get the joke ’cause it was above my head.”

However, public records and a high-ranking law enforcement source indicated there were signs of trouble at home.


His family life in Santa Clarita was upended by his father’s sudden death in December 2017, acquaintances said. More recently, a source told The Times that the boy was having problems with his girlfriend, who was his emotional anchor.

The teen’s father, Mark Berhow, was arrested on suspicion of driving under the influence in 2013 and 2015 and pleaded no contest twice. The second time, he was sentenced to 45 days in jail and five years’ probation.

According to jail records, he was also booked in 2015 on suspicion of attempted battery of a spouse. The Los Angeles County district attorney’s office declined to file charges in that case, citing insufficient evidence.

A judge granted physical custody of the boy to his mother in August 2016, even though both parents still appeared to live in the family’s small ranch home on Sycamore Creek Drive.


“It’s a tough day here in Santa Clarita,” Villanueva said. “Grab your kid, hold them a little tighter and make sure they do the right things when they’re in school.”

Authorities are asking any witnesses who have not already spoken to police to contact the Los Angeles County Sheriff’s Department’s Homicide Bureau at (323) 890-5500.

Times staff writers Sarah Parvini, James Queally, Soumya Karlamangla and Alejandra Reyes-Velarde contributed to this report.