Elgin Stafford, 23, left his home on the 20,000 block of Campaign Drive in Carson on Tuesday morning.
He's a UC Berkeley graduate who interned for a local congresswoman and has no known medical issues. Investigators say he has a tattoo on his right shoulder.
Anyone with information on Elgin Stafford is urged to call L.A. County Sheriff's Homicide Bureau at (323) 890-5500.