UPDATE: WWE.com has posted a short story confirming the death of Nelson Frazier, Jr.

According to multiple reports, Nelson Frazier, Jr., who wrestled for the WWE as Mabel, Viscera and Big Daddy V, has died at the age of 43.

The cause of death has not yet been confirmed, but according to Eric Simms of ESS Promotions, Frazier died due to a massive heart attack. ESS Promotions helped coordinate Frazier's wrestling bookings.

I hate to be the bearer of bad news but I just got off the phone with Big Daddy V's wife. He had a massive heart... http://t.co/yN2E7aHM1e

Several names in the wrestling industry have taken to Twitter to express their condolences.

I am shocked & so sad. Mabel, Viscera, Big Daddy V (Nelson Frazier) passed away. He was a good friend. He just celebrated his 43Bday
Saddened, stunned & blind sided to hear of the passing of Nelson Frazier aka Viscera. What a gentle and lovable guy! Rest in Peace Big Vis!
As I hear of the passing of my friend Nelson Frazier aka Viscera/Mabel/Big Daddy V, I'm seeing a montage of really good times. My Man, RIP!
RIP Nelson Frazier.
Nelson Frazier, Jr passed away today at age of 42 apparently of a heart attack. He was Viscera, Big Daddy V & Mabel in @WWE RIP Big Fella
R.I.P. to another brother I'll miss. Nelson Frazier- Viscera-Big Daddy V Your life was too short.
Very sad news tonight, 1 of the good guys has passed on. Nelson Fraser/Big Daddy V. RIP Big Vis! God bless!

[h/t to ProWrestling.net for the Eric Simms find]