A 29-year-old father was arrested on suspicion of murder for the shooting deaths of his four children and their grandmother, who were found at a Lancaster home Sunday night, officials and family members said.

Deputies first responded to the home on the 3500 Block of Garnet Lane after getting a call around 10:27 p.m., Los Angeles County Sheriff’s Department officials said in a news release.

They arrived to find the grandmother, a woman in her 50s, suffering from gunshot wounds to her upper torso.

One girl and three boys — all under the age of 12 — were also found with gunshot wounds to their upper torsos.

All five were pronounced dead at the scene by responding paramedics. 
 
Germarcus David, the children’s father and son-in-law of the woman, was detained when he showed up at the Lancaster Sheriff’s Station lobby, the Sheriff’s Department said.

He was interviewed by investigators and arrested Monday morning.

David was being held in lieu of $2 million bail. 

Family members told KTLA the victims were found by the children’s mother, who is the daughter of the woman killed.

Neighbor Reginald Beltran told KTLA he saw the mother a short time after the deadly shootings.

“We can hear her screaming over the phone,” Beltran recalled. “The only that that was very clear… she was screaming ‘my babies are dead, my babies are dead.’”

Video from the scene showed ambulances and police cars swarming the suburban neighborhood as investigators probed the home that was closed off with police tape.

Officials have not named the victims and no further details were immediately available.
 
Anyone with information about the killings is asked to contact the Sheriff’s Department Homicide Bureau at 323-890-5500. Those who prefer to provide information anonymously can call Crime Stoppers at 800-222-8477.