The man who tried to assault Michael Bay and blackmail the crew for HK$100,000 on the set of Transformers 4 has been sentenced to two and a half years in jail.

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Brothers, Mak Chi-shing and Mak Chi-hang, aged 27 and 28, created a nuisance on the Hong Kong set of the film with the intent of extracting money from the producers of the film, on Oct. 17 last year.

Chi-shing was convicted and found guilty on one charge of blackmail and another for assaulting a police officer in a District Court in Hong Kong. Chi-hang was acquitted of blackmail charges due to insufficient evidence.

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Cha-shing had actually attempted to attack Bay, wielding an air conditioner on the set of Transformers 4: Age of Extinction.

The director later spoke about the incident describing Cha-shing on Twitter: "like a Zombie in Brad Pitt's movie World War Z" as "he lifted seven guys up and tried to bite them."

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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 about the incident:

"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."

Transformers: Age of Extinction comes out June 27, 2014.

Watch the first teaser of the film: