Originally published on ProWrestlingSheet.

Jim Neidhart aka The Anvil passed away on Monday at the age of 63-years-old.

No word at this time on The Anvil's cause of death, but WWE.com has now confirmed his passing. According to The Blast, Neidhart was staying at the house of his daughter Natalya when he began suffering convulsions and a seizure. He then fell and hit his head. 

Back in July, ex-WWE wrestler Chris Nowinsky revealed Neidhart was dealing with Alzheimers. 

Jim last appeared on social media with Natalya a few weeks ago. They attended a Smashing Pumpkins concert together (seen below).

We here at Wrestling Sheet offer our most sincere condolences to Neidhart's family.