A 10-month-old girl was found unresponsive. She was taken to St. Francis Medical Center in Lynwood, but it was unclear if she died on the way to the hospital or while in care. Officials said she died of blunt force trauma.
The incident allegedly began with an argument between Jose Deras and the child's mother.
Authorities are looking for Deras and a black, four-door 2008 Nissan Sentra with California license plate 6FYB170.
Anyone with information is asked to call (323) 890-5500.