Updated

The FBI says agents found $800,000 in cash during a search of Boston mob boss James "Whitey" Bulger's Santa Monica apartment following his arrest.

Steven Martinez, FBI Assistant Director in Charge in Los Angeles, said at a news conference Thursday afternoon that agents also found more than 30 firearms, including pistols, rifles and shotguns, several types of knives and several pieces of false identification.

Bulger, the FBI's most-wanted man, and his live-in companion Catherine Greig, were arrested without incident Wednesday night at their Santa Monica apartment.

Bulger was ordered returned to Massachusetts to face charges during a federal court hearing in Los Angeles Thursday.