In another case out of Arizona, this one for a 2010 police killing, the partner of a convicted killer copis now being sued for failing to prevent the murder. This is good -- cops who just look the other way instead of proactively averting police violence must also be held to account. ABC 15: Family of man killed by Phoenix officer Richard Chrisman suing his former partner (Sept 19 2013) The family of a man shot and killed by a Phoenix police officer is suing the cop's former partner alleging he failed to stop the officer from using excessive force ... During the trial, Chrisman's partner, Sergio Virgillo, testified for Rodriguez's family saying he saw no threat justifying the use of deadly force. But despite his testimony, Rodriguez's family is suing Virgillo. The suit claims, “Officer Virgillo has an opportunity to intervene and stop Officer Chrisman from using excessive force against Daniel and failed to do so." The family says Officer Virgillo knew that Chrisman was going to shoot Rodriguez sooner or later and he turned away to "get out of the danger zone." Background ... Arizona Republic: Ex-Phoenix police Officer Chrisman convicted of aggravated assault (Sept 17 2013) Former Phoenix police Officer Richard Chrisman will spend at least five years in prison after a jury found him guilty of aggravated assault for pointing his gun at the head of a domestic-violence suspect during a 2010 confrontation that ended with the man's death.