Cops Close to Cracking Butt-Slasher Case Johnny Guillen Pimentel slashed 9 women in Virginia: Police By Mark Russell, Newser Staff Posted Sep 8, 2011 1:00 AM CDT 2 comments Comments Johnny Guillen Pimentel has been identified by police as the man behind nine stabbings in Virginia malls since February. (Fairfax Co. Police) (Newser) – The Virginia butt slasher, a heavy-set man who has stabbed nine women in malls around Virginia this year, has been identified, reports the New York Daily News. Police say the culprit is 40-year-old Johnny Guillen Pimentel, and police are hunting for him now. "Detectives still aren't clear what the motive could be. Certainly we would like to talk to the individual and find out," said a police spokeswoman.