An undercover male cop dressed as a schoolgirl managed to foil a serial flasher in Japan - despite his hairy legs.

　　The 21-year-old officer, from Ube City, in Japan agreed to go undercover to catch the flasher, who had exposed himself to at least 20 schoolgirls. He agreed to wear a mini-skirt - but refused to shave his legs for the operation, known as Operation Cross-dresser.

　　The officer, who refused to be named, told Japanese media: "It was embarrassing, so I'd rather not comment." A Ube police spokesman said: "The young policeman chosen for the task looked good in the borrowed school uniform without a wig or make-up."

　　The flasher, a 50-year-old company executive, was caught as he exposed himself to the undercover cop. The company boss now faces charges of indecent exposure.