(NBC) - A Mexican wrestler collapsed and died during a performance in London over the weekend.
Cesar Gonzalez Barron performed under the name "Silver King."
He died of an apparent heart attack during a match at the London venue "Roundhouse."
Amateur video of the event shows the performer in the ring in front of a cheering crowd.
He later collapsed, and police said the death was being treated as non-suspicious.
The venue posted on twitter that he had passed away and sent its condolences to his family and friends.
The 51-year-old former world championship wrestling performer was facing "Juvi" Guerrera in the ring.
As Cesar Gonzalez, he appeared with Jack Black in the film "Nacho Libre" back in 2006.