The death of an infant has sparked an investigation in Lancaster after detectives say the baby was somehow hurt inside the family home.
The 8-month-old boy's mother told authorities that she put the baby in bed after 9 p.m. Tuesday, Los Angeles Sheriff's Lt. Steve Jauch said. The baby boy lived at the home with his 3-year-old sister and four adults, including his mother.
The mother said she "heard a sound" and that the baby fell off the bed, Jauch said.
The infant was taken to the hospital with traumatic brain injuries and died during surgery, officials said.
But detectives say the family's story is "inconsistent" with the infant's injury.
No arrests have been made, but the death is being investigated as suspicious, Jauch said.