A man wearing a "Transformers" T-shirt who tried to board a plane at London's Heathrow airport says he was stopped while passing through security because the cartoon image showed the character with a gun, according to the Daily Mail of London.

Brad Jayakody, 30, said he was pulled out of line by a security guard who threatened to arrest him because the shirt was "offensive," the Mail reported.

Jayakody, of London, was on his way to Dusseldorf, Germany, for a business trip, when the guard joked with him about the shirt.

"Then he explains that since Megatron is holding a gun, I'm not allowed to fly," he told the Mail. "It's a 40-foot tall cartoon robot with a gun as an arm. There is no way this shirt is offensive in any way."

Jayakody did take off the shirt and put on another one from his carry-on bag instead, so he was allowed to board.

A spokesman for Heathrow operator BAA told the newspaper that "if a T-shirt has a rude word or a bomb on it, for example, a passenger might be asked to remove it. We are investigating what happened to see if it came under this category."

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