I don't think this was ever reported after he was arrested, but I tracked down the specifics for what Sarmiento did last month.
http://www.guadalajaradosmil.es/noti...as-siglo.htmlm
Basically, in 2003 while working as a bouncer, he beat up a guy leaving him half paralyzed. He initially pleaded guilty, but later he said he was just covering for something his brother did. (Not Pablo, another brother)