UNLV Shooting: Police Investigate Gunman's Phone and Behavior

Police have obtained a search warrant for the cell phone of Anthony Polito, the suspect in the UNLV shooting that left three professors dead and one severely injured. The motive for the shooting is still under investigation, but police hope that examining Polito's phone will provide some answers. Polito was killed in a shootout with police shortly after the incident. It has been confirmed that he unsuccessfully sought a job at the university and was in possession of legally purchased firearms. Prior to the shooting, Polito published a 16-page document referencing letters he sent to educators across the country. The investigation is ongoing.