Man's strange behavior triggers security alert at Sea-Tac Airport

SEA-TAC AIRPORT -- A man who entered a concourse through its exit, then ran down the jetway triggered a security alarm on Monday night.

Officials said the man rushed past security guards and entered Concourse C through its exit at approximately 9 p.m. The TSA sounded the alarm, and the Port of Seattle Police pursued the man.

The man ran down the jetway of a plane, and several nearby passengers tackled the unidentified man and kept him subdued until officials arrived. No one was injured.

No motive was given for the man's strange behavior. The man was taken for a medical evaluation at Highline Medical Center.