Authorities released the identity of a 3-year-old boy killed in his Lancaster home Tuesday night, saying the mother's boyfriend was a person of interest in the brutal slaying.

Officials said the toddler, David Hernandez, was found with his throat slit in the 43400 block of West 57th Street when officers arrived around 10:55 p.m. He was pronounced dead at a local hospital.

Los Angeles County Coroner It reported that his cause of death was homicide and the cause of death was a “cut to the neck.””

Lena Knowles, 39, of Lancaster, was taken to the hospital for a suspected suicide attempt at the scene, the sheriff's office said in a news release.

Investigators said Nalls was the victim's mother's live-in boyfriend. He was designated as a “person of interest” in this case.. Nalls was hospitalized and her condition is stable, police said.

The Times previously reported that investigators, who were not authorized to speak publicly, said a family friend went to the home at the request of one of the boy's relatives, found the boy with his throat slit in the bathtub and called 911. It was reported that. .

The child's three older siblings, ages 9, 11 and 14, were unharmed and taken into custody by the Department of Children and Family Services, sources and the sheriff's office said. The Times reported that the family had no previous contact with the Department of Children and Family Services.

No arrests have been made.