The Pleasant Valley State Prison is located in Coalinga.
Officers at the prison say 24-year-old Antonio Jaureque was in prison for a parole violation on a vehicle theft.
He was being housed in a minimum security area outside of the of the prison's secure perimeter with roughly 150 other inmates.
Prison officials are continuing to search the area around the prison for Jaureque.
He's listed at six feet tall, roughly 200 pounds.
Anyone with information is asked to call 911.