Dustin Diamond tells court he 'tried to protect partner'

TV actor Dustin Diamond has insisted he did not intentionally stab a man in a Christmas Day bar scuffle as he claimed he and his girlfriend had suffered harassment before the fight broke out.

Diamond, 38, said some people had wanted to shake his hand and pose for photos at the bar in Port Washington, Wisconsin, but others were badgering him and his girlfriend Amanda Schutz.