It looks like the "Transformers 4" trailer may be delayed due to some trouble on the Hong Kong set in which director Michael Bay was attacked.

The famed Hollywood director got into a scuffle with two men on Thursday, October 17th.

According to TODAY, two brothers with the last name Mak, ages 27 and 28, approached 48-year-old Bay on the set while filming for the science fiction film where the younger brother demanded money.

He insisted on HK$100,000 ($12,900), a police spokeswoman told Reuters however, it was not clear why the two men wanted the money from Bay.

Apparently the attack took place in a busy area of Hong Kong island and the older Mak walked up and assaulted the director, the spokeswoman added.

He also attacked three police officers who tried to intervene when they saw what was going on.

The younger brother was eventually arrested on suspicion of blackmail and assault, while his older sibling was arrested on suspicion of assault, according to Us Weekly.

Michael Bay sustained injuries to the right side of his face but declined medical attention for his injuries. The spokeswoman said she did not believe his injuries were serious.

Although the producer could not be reached for comment and the crew on set refused to speak on the incident, filming continued following the dispute.