Bison Smith passed away on Wednesday in San Juan, Puerto Rico, from what is believed to be a massive heart attack. Smith wrestled on Sunday in Sapporo, Japan for Pro Wrestling NOAH, then flew to Puerto Rico. He was scheduled to work the weekend World Wrestling Council shows, finishing up on 11/27 and facing Primo Colon as the headline match at WWC’s Crosssfire show.
It appears Smith suffered a heart attack, was unable to speak, and rushed to Hospital Regional in Carolina, PR where he passed away.
source: Wrestling Observer Newsletter