Story highlights Diamond said he was acting to protect his girlfriend

Actor said he didn't intentionally stab anybody

Police said they found a knife in Diamond's vehicle

(CNN) Police on Friday arrested Dustin Diamond, better known as "Screech" in the early 1990s sitcom "Saved by the Bell," in a stabbing incident at a bar in Port Washington, Wisconsin.

Diamond, 37, of Port Washington, was charged with three misdemeanors: second-degree recklessly endangering safety; carrying a concealed weapon; and disorderly conduct, use of a dangerous weapon, according to a press release from the police.

He was being held Friday in lieu of $10,000 bond.

According to an arrest report released Friday afternoon, the stabbing took place late Thursday night during an argument in the Grand Avenue Saloon.

Diamond said he and his girlfriend, Amanda Schutz, 27, were inside the bar when a group of intoxicated people started behaving in a rude and insulting manner, leading him to believe "there was going to be a brawl," the report said.

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