TMZ sources say that comedian Katt Williams took out a gun on someone at the Comedy Store in West Hollywood last night. 

Witnesses tell TMZ that Katt was in the club when someone walked by and started dissing his height and race. He was said to have gone crazy, threatening the heckler with a gun. 

Someone made a call to 911 which triggered six cop cars racing to the scene armed. The police pointed guns at the night club when they arrived anticipating a confrontation. 

Katt had fled the scene when the police showed up. There is currently no warrant out for his arrest as police are still investigating the situation.