Director Michael Bay was attacked by a crazed local wielding an air conditioner on the set of Transformers 4: Age of Extinction in Hong Kong Thursday and took to Twitter to explain exactly what happened.

In his post, which is a locked for the public but was accessible to Deadline, Bay described the attacker as being "like a Zombie in Brad Pitt's movie World War Z" as "he lifted seven guys up and tried to bite them."

The unidentified man tried to disrupt filming and hurled an air conditioner at the director on the film's set in Quarry Bay. He came on set with friends and stirred things up by accosting several crew members. There is no word on how the man -- allegedly under the influence of drugs -- and his friends managed to get on the set.

When the man who was carrying the air conditioner hurled it at the director, Bay quickly ducked and deflected what could have been a fatal accident. 

Though Bay reportedly did sustain a few minor injuries to the right side of his face, he didn't seek medical attention. The men who barged on set were allegedly angry because they believed that the producers of the film owed them for filming in their city and were trying to seek compensation..

Read Bay's entire post below:

"It's Michael.

Yes, the story is being passed around is not all true! Yes, some drugged up guys were being belligerent asses to my crew for hours in the morning of our first shoot day in Hong Kong. One guy rolled metal carts into some of my actors trying to shake us down for thousands of dollars to not play his loud music or hit us with bricks.

"Every vendor where we shot got paid a fair price for our inconvenience, but he wanted four times that amount. I personally told this man and his friends to forget it we were not going to let him extort us. He didn't like that answer. So an hour later he came by my crew as we were shooting, 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. That's when the security jumped on him. But it took seven big guys to subdue him. It was like a Zombie in Brad Pitt's movie World War Z-he lifted seven guys up and tried to bite them. He actually bit into one of the guards Nike shoe, insane. Thank god it was an Air Max, the bubble popped, but the toe was saved.

"Then it took fifteen Hong Kong cops in riot gear to deal with these punks. In all, four guys were arrested for assaulting the officers.

"After that, we had a great day shooting here in Hong Kong."

Tags: Transformers 4 Michael Bay