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A man going through security at the Detroit airport had a knife concealed in the lining of his shoe and was arrested, authorities said.

Airport police took the knife and arrested the man Sunday morning, the Transportation Security Administration said. The TSA did not immediately release the man’s name. The agency described the knife as “artfully concealed.”

This July 6 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. Transportation Security Administ via AP

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— Erin McClam