Juan Lopez, the gunman who went on a rampage Monday at Mercy Hospital & Medical Center, piled up a history of allegations of menacing behavior in the years before he killed his ex-fiancee, as well as a Chicago cop and a pharmacist who simply crossed his path at the wrong moment, the Chicago Tribune reports. Lopez, 32, had threatened to shoot up the Chicago Fire Department Academy nearly five years ago, around the time he was fired for failing to show up to work while facing allegations of “improper conduct” toward women there. His ex-wife in 2014 obtained a temporary order of protection against him, alleging that he slept with a pistol under his pillow and had pointed a gun at someone. Nonetheless, Lopez was licensed to carry a concealed weapon when he terrorized the hospital.
It was unclear Tuesday whether Lopez’s alleged past conduct had ever led to any review or temporary revocation of his permission to own or carry a gun. The Washington-based Violence Policy Center said that since 2007, at least 33 shootings involving three or more fatalities have been committed by concealed handgun permit holders across the nation and at least 22 law enforcement officers have been killed by concealed handgun permit holders. Chicago police said Dr. Tamara O’Neal, 38, had broken off her engagement with Lopez and that he had gone to the hospital to demand his ring back. The couple argued in the parking lot and he fatally shot her. While fleeing from officers, Lopez shot first-year pharmacy resident Dayna Less, 24, as she stepped off an elevator inside the hospital. Lopez fatally shot officer Samuel Jimenez, 28, in the neck during a gun battle with police inside the hospital. Lopez then shot himself in the head, and died at the scene. A picture emerged Tuesday of Lopez as a man with a troubled history, particularly with women.