It was like a Michael Bay movie on the set of the new Michael Bay movie, as more than a dozen police Thursday subdued a crazed attacker.

"Some drugged-up guys were being belligerent ---- to my crew for hours in the morning of our first shoot day in Hong Kong," Bay wrote on his blog of his new film "Transformers: Age of Extinction." One local vendor whom Bay said wanted four times the amount others were paid for the inconvenience of the shoot "came by my crew ... carrying a long air-conditioner unit. He walked right up to me and tried to smack my face, but I ducked, threw the air unit on the floor and pushed him away."

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Security jumped in but, wrote Bay, "It was like a zombie in ... 'World War Z' -- he lifted seven guys up and tried to bite them." He added it took 15 Hong Kong cops in riot gear to deal with the situation.

A Hong Kong police spokeswoman told The Associated Press two shopkeeper brothers demanded $13,000, and after being rebuffed, assaulted three police officers and Bay, whom she said suffered a minor facial injury but declined medical attention.