Professional wrestler Andy “The Butcher” Williams died Friday at age 48 after collapsing in the ring during a tag-team match. The incident occurred at Mr. Small’s Theater in Millvale, Pennsylvania.

Williams, whose real name is Andrew Williams, was competing with his longtime tag-team partner Jesse “The Blade” Guilmette when he experienced a medical emergency. According to witnesses, Williams appeared unsteady and then fell to the mat. Medical personnel present at the event immediately entered the ring to provide assistance, administering CPR before he was transported to a local hospital. He was later pronounced dead.

Love Wrestling, a Pittsburgh-based organization, confirmed his death. The remainder of the wrestling event was canceled following the incident.

Officials have not yet released the official cause of death. Williams was also known for his work as a musician, serving as the rhythm guitarist for the heavy-metal band Every Time I Die.