Authorities say a California woman is in custody after her three young daughters were stabbed to death and their blood-covered bodies were neatly arranged on a bed.

The children were 2 years old, 16 months and 2 months old.

Los Angeles County Sheriff's Lt. Dave Coleman said Wednesday that the mother, 30-year-old Carol Coronado, was hospitalized after being taken from the scene covered in blood and naked under a blanket, with multiple self-inflicted stab and slice wounds.

Investigators are examining her medical history.

Her husband was working on a car when the children's grandmother arrived and discovered the bodies.

Several knives were collected as evidence from the home.