Dustin Diamond has gone to prison after he was convicted of carrying a concealed weapon and of disorderly conduct.
The actor, who played Screech in Saved By The Bell, was caught up in a bar brawl in Wisconsin in 2014.
He began a four month spell in jail last night after he delayed entering prison for over six months by appealing against his conviction in June last year.
The former Celebrity Big Brother housemate pulled a switchblade knife on a man during a bar fight at the Grand Avenue Saloon in Port Washington, Milwaukee in Wisconsin.
The star insisted he took out the knife to defend himself and his fiancée Amanda Schutz but accidentally stabbed the man.
Dustin’s partner Amanda was also found guilty of disorderly conduct.
The pair was told to pay $1,500 to the stabbing victim after he suffered a non-life-threatening wound and Dustin was also sentenced to 15 months of probation.