From WWE.com:
Reports indicate that Matt Osborne, aka the original Doink the Clown, has passed away. A rugged brawler in promotions like Mid-South Wrestling and World Championship Wrestling, Osborne made a major impact in WWE under the greasepaint of a prankster named Doink — one of the most enduring personas of the early ’90s.
WWE is saddened by the news of Osborne’s passing. Our deepest condolences go out to Osborne’s family, friends and fans.