Originally published on ProWrestlingSheet.

Tom Zenk's cause of death has been determined by the coroner and heart issues were to blame.

A rep for the Hennepin County Medical Examiner tells us Zenk's death was caused by arteriosclerotic heart disease - which is hardening and/or narrowing of the arteries -- and an enlarged heart.

As we previously reported, the wrestler passed away in December.

Zenk was best known as a member of the Can Am Connection tag team in WWF from 1986 - 1987 and as Z-Man in WCW from 1989 - 1994.

He was 59-years-old.

(UPDATE: This story was first reported in last week's Wrestling Observer)