The weirdest story out of this year’s Lollapalooza involved a man biting another man’s shoulder, zombie-style, during the Arctic Monkeys’ headlining set. Now police believe they’ve identified the culprit. Redeye reports that downtown Chicago resident Sergio Vicenteno, 33, has been charged with two accounts of aggravated battery at a public venue for sinking his teeth into Ben Lenet, 29, of Wicker Park, and tackling Lenet’s friend. Lenet was treated and released from the hospital the same day after undergoing preventative treatment for HIV and Hepatitis. Vicenteno (pictured) is being held in lieu of $60,000 bond.