Package explodes at FedEx office
San Diego - San Diego police say a package has exploded at a FedEx warehouse but nobody was injured.
Detective Gary Hassen says an employee at the Sorrento Valley building was opening the package when it blew up early on Wednesday morning.
The worker wasn't hurt but the building has been evacuated and the police bomb squad has been called in.
Hassen says it's unclear what caused the explosion, which produced smoke but no fire.