Silver King unfortunately passed away on Saturday night while wrestling Juventud Guerrara at a Lucha Libre World event in London, and Lucha Libre World issued the following statement noting that it’s believed he went into cardiac arrest:

“We are sorry to confirm that last night at ‘The Greatest Show Of Lucha Libre’ at Camden’s Roundhouse, César Cuauhtémoc González Barrón (AKA Silver King) suffered what we believe was a cardiac arrest while performing in the show and sadly passed away.

We have truly lost one of Lucha Libre’s greatest wrestlers and our thoughts and deepest condolences are with César’s family and his fans across the world. We will be able to make further announcements when more information becomes available.

Rest in peace Silver King, you will be sorely missed.”

Following his passing WWE issued a statement of their own which can be read below.

“WWE is saddened to learn that Lucha Libre legend and former WCW star Silver King has passed away at age 51.

A champion luchador in his native Mexico, Silver King, real name César Cuauhtémoc González Barrón, entertained audiences across the globe, and was a standout in WCW’s Cruiserweight division in the late ’90s. Outside the ring, he appeared under a mask as the villainous Ramses in the popular 2006 comedy “Nacho Libre.”

WWE extends its deepest condolences to Silver King’s family, friends and fans.”