Walker's autopsy complete, details placed on hold

LOS ANGELES, Dec. 3 (UPI) -- The Los Angeles County Coroner's Office has completed its autopsy on "The Fast and the Furious" star Paul Walker's remains, TMZ reported Tuesday.

However, office spokesman Lieutenant Fred Corral told UsMagazine.com the case has "been placed on security hold" and "no information is to be released on either decedent at this time."

The Los Angeles Sheriff's Department said Monday the Porsche in which Walker was killed was traveling alone at a high speed.

The actor and his friend, Roger Rodas, were killed Saturday afternoon when the car Rodas was driving smashed into a light pole and caught fire.

The cause of the collision remains under investigation.