Ryan Giroux , Thursday , is held on a lengthy list of charges including several counts of aggravated assault and burglary , as well as one count of murder . The string of shootings began in a Mesa motel , though detectives are uncertain about why Giroux opened fire . While fleeing the scene , he shot and carjacked an area culinary student , before shooting two others in apartment complexes . In earlier mugshots , Giroux bears tattoos signaling membership in white supremacist groups and was known to be connected to Hammerskin Nation . Giroux has a history of methamphetamine use and admitted he becomes violent when intoxicated or under the influence .
Ryan Giroux , 41 , is held on a lengthy list of charges including several counts of aggravated assault and burglary , as well as one count of murder . The string of shootings began in a Mesa motel , though detectives are uncertain about why Giroux opened fire . While fleeing the scene , he shot and carjacked an area culinary student , before shooting two others in apartment complexes . In earlier mugshots , Giroux bears tattoos signaling membership in white supremacist groups and was known to be connected to Hammerskin Nation . Giroux has a history of methamphetamine use and admitted he becomes violent when intoxicated or under the influence .