CRIME

Passenger arrested at Detroit airport with knife concealed in his shoe

This July 6, 2014 photo provided by the Transportation Security Administration shows a knife concealed inside the bottom lining of a shoe belonging to a passenger at Detroit Metropolitan Airport in Romulus, Mich. The TSA says airport police responded, took possession of the knife and arrested the passenger. (AP Photo/Transportation Security Administration)

This July 6, 2014 photo provided by the Transportation Security Administration shows a knife concealed inside the bottom lining of a shoe belonging to a passenger at Detroit Metropolitan Airport in Romulus, Mich. The TSA says airport police responded, took possession of the knife and arrested the passenger. (AP Photo/Transportation Security Administration)  (The Associated Press)

Authorities say an airline passenger has been arrested in Michigan after being found with a knife concealed inside the bottom lining of one of his shoes.

The Transportation Security Administration says the knife was found Sunday morning during security screening at Detroit Metropolitan Airport in Romulus.

The TSA says airport police responded, took possession of the knife and arrested the passenger. His name wasn't immediately released.

The TSA says the knife should have been placed in checked luggage.