The FBI has put Winter Olympics host Salt Lake City on alert for Valentine's Day teddy bear bombs.
Law enforcement sources said that airports were also placed on alert in case the suspected bear bombs might be carried onto aircraft.
The FBI said a man of possible Middle Eastern descent bought nine Valentine teddy bears, 20 inches tall, and 14 canisters of propane gas small enough to fit inside the toy.
The man also bought 12 packets of air gun pellets.
He paid in cash on January 15 at a Wal-Mart shop near Los Angeles.
Security officials have told Americans to be on the lookout for suspicious packages.