AURORA, ILLINOIS — A man opened fire on his coworkers after losing his job at an Illinois manufacturing plant, using a gun he wasn't even supposed to have.<br /><br />The Chicago Tribune reports that while at a termination meeting at the Henry Pratt Co. in Aurora, Illinois, Gary Martin pulled out a handgun to shoot and kill the three people in the room with him.<br /><br />Martin then went on a gun rampage inside the office, shooting dead two coworkers just outside the meeting room and injuring another.<br /><br />According to CNN, the 45-year-old gunman shot and wounded five of the first police officers who arrived on the scene, before fleeing into the sprawling manufacturing plant.<br /><br />Aurora police Deputy Chief Keefe Jackson said over 200 to 300 officers from 35 agencies were deployed to the scene to hunt for the suspect and help rescue victims.<br /><br />The police found Martin in a back machine shop an hour later. He opened fire on the officers, who fired back, killing him.<br /><br />According to the Chicago Tribune, Martin had been carrying the gun illegally. Police said he bought the handgun in 2014 after getting an Illinois firearm owner's identification card.<br /><br />A background check failed to turn up a felony aggravated assault charge in Mississippi 25 years earlier, which would've disqualified him from legally owning a gun.<br /><br />But it wasn't until Martin applied for a concealed carry permit that his conviction was flagged and his firearm owner's ID card revoked. According to CNN, he was instructed to voluntarily relinquish his gun, but never did.
