U.S. & World
The Asbury Park Press reported that Cohen, who gained notoriety for her foul-mouthed rants after appearing on Season 7 & 8 of "Idol," was killed early Saturday in Seaside Heights, New Jersey.
She reportedly suffered chest, head and abdominal injuries.
Bark could receive a maximum of 15 years in prison if found guilty.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: From 'Wicked' To 'Idol': Hot Shots Of Adam Lambert
PLAY IT NOW: Dish Of Salt: 'American Idol' Finalists Answer Fan Questions (July 24, 2009)
PLAY IT NOW: Dish Of Salt: 'American Idol's' Adam Lambert & Kris Allen Get New Cars (July 16, 2009)