"Beastie Boys" Adam Yauch has died, according to reports. He was 47.

Yauch died Friday morning after a long battle with cancer, first reported Russell Simmons' website GlobalGrind.com. Yauch announced in 2009 that he was battling cancer in a parotid gland and lymph node. He co-founded the Beastie Boys in 1979 with Mike D. Mix Master and Ad Roc.

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The Beastie Boys are photographed here at the 2006 Sundance film festival in Park City

The Beastie Boys (L-R) Mike Diamond, Adam Horowitz and Adam Yauch are photographed at the 2006 Sundance film festival in Park City, Utah, January 22, 2006. The Beastie Boys' documentary film "Awesome: I Fuckin' Shot That" is screening at the festival.