Slipknot Guitarist's Brother Stabs Him in Head: Cops Surprise: Alcohol was involved By Evann Gastaldo, Newser Staff Posted Mar 12, 2015 9:52 AM CDT 17 comments Comments A member of Slipknot performs during the Rock in Rio music festival in Rio de Janeiro, Sept. 25, 2011. (AP Photo/Felipe Dana) (Newser) – Life has apparently imitated art for Slipknot, a heavy-metal band known for its scary costumes and violent imagery. Police say the guitarist, Mick Thomson, got into a drunken fight with his brother Andrew early yesterday at a home in Iowa. Both were allegedly armed with knives, and Andrew allegedly stabbed Mick in the back of the head, the Des Moines Register reports. Both brothers were brought to the hospital with non-life-threatening injuries, and Slipknot's lead singer Corey Taylor later tweeted, "Mick Update: from what I've heard he's okay." In 2010, Slipknot's bassist suffered a fatal overdose.