Dustin Diamond, the actor who played Screech on Saved by the Bell, has been sentenced to four months in jail for stabbing a man during a bar fight.

The 38-year-old was found guilty and convicted of two misdemeanour charges connected with the fight that took place on Christmas Day in a pub in Wisconsin.

A jury convicted the former child star of carrying a concealed weapon and behaving in a disorderly manner.

The fight began when Dustin and his fiancée, Amanda Schutz, were in the bar and a group of allegedly drunk people started verbally harassing them.

According to reports, the actor who played Samuel ‘Screech’ Powers turned to pay his bill, and when he turned back around his fiancée was bleeding and two men were holding her hair.

The report said that “Diamond stated that he did not intentionally stab the individual in the bar but that chaos broke out and people were grabbing at him and that he swung his arms to break free.”

The victim of the stabbing was not seriously injured.

Dustin played Screech on the Saved by the Bell from 1989 to 1993, and the subsequent spinoffs that followed.