CHICAGO (AP) - Prosecutors dropped all charges against a man who said an airport security guard misunderstood him when she thought he said a sexual device in his backpack was really a bomb.

Mardin Amin, who appeared in court Wednesday morning, has said he actually told the female security guard at O'Hare International Airport last month a small, black object was a "pump" - as in a penis pump.

Prosecutors chose to follow the lead of the U.S. Transportation Safety Administration, which recently concluded the matter did not warrant prosecution, said Cook County state's attorney spokesman John Gorman.

Amin, 29, an Iraq-born Skokie, Ill., resident had been charged with felony disorderly conduct and faced up to three years in prison if convicted.

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