ROMULUS, Mich. (AP) — Detroit Metropolitan Airport officials say a dog's suspicions about a piece of cargo proved to be unfounded after triggering a partial evacuation of the main terminal.
The false positive finding led to the evacuation of about a third of the McNamara Terminal from 10:30 a.m. to 11:40 a.m. Tuesday.
The U.S. Transportation Security Administration says a K9 unit involved in a "routine cargo inspection" alerted authorities to an item, and the agency then evacuated nearby passengers "in an abundance of caution."
Detroit Metro spokesman Scott Wintner says it was a false alarm, and authorities allowed normal passenger traffic to resume.
Wintner says the dog may have sniffed trace amounts of a chemical that could be used in an explosive.
The airport is in the Detroit suburb of Romulus.