Jeffrey John "Jeff" Hanneman (January 31, 1964 – May 2, 2013) was an American guitarist, best known as a founding member of the American thrash metal band Slayer.

In early 2011, Hanneman contracted necrotizing fasciitis. According to the band, doctors say that it likely originated from a spider bite. Hanneman died on May 2, 2013 near his home in Southern California's Inland Empire. He was in a local Los Angeles hospital and suffered liver failure.

source: http://en.wikipedia.org/wiki/Jeff_Hanneman