A man who opened fire at the University of Cincinnati Medical Center last week, wounding a security guard before killing himself, had an extensive and violent criminal history.

On December 20, Isaiah Currie, 20, entered the UC Medical Center and brandished two handguns. Currie then shot at a security officer, striking him in the shoulder. He also shot at a responding officer before turning a gun on himself. Surveillance video of the incident can be seen here.

In 2015, Currie was arrested for assaulting another UC Health security officer, reports The Star Tribune. He was temporarily confined to a hospital in 2016 and was ordered to take medication following his arrest.

The 2015 police report says Currie was a patient at another University of Cincinnati Health facility but did not say what he was treated for. The security officer sustained a knee injury while “struggling with a combative patient”, reads the report.

Currie pleaded not guilty by reason of insanity in Hamilton County Municipal Court. Judge Heather Russell ruled Currie incompetent to stand trial and ordered him into treatment at the Summit Behavioral Healthcare Hospital in July 2016. Currie was later sentenced to time served and was put on probation in November 2016.

Exactly one year after being put on probation, Currie was accused shooting a man in the arm after firing 12 shots from a semi-automatic rifle at Laurel Park. A grand jury did not indict him in the incident.

Currie was indicted by a separate grand jury in November of this year on charges of assaulting a corrections officer and obstructing official business. Court documents indicate Currie charged and punched a deputy who opened his cell door to give him food.

Currie was released on $75,000 bond December 14, a week before the UC shooting. Court records also show Currie’s probation was revoked on November 30 in the 2015 case.

Other charges Currie has faced, according to WCPO, include drug trafficking, possession of drugs, resisting arrest and breaking and entering.

Attorney M.J. Hugan, who represented Currie in the jail assault, says she knew Currie had a mental health history but corrections officers told her jail employees hadn’t had any other problems with him. Hugan says Currie seemed stable and coherent when she saw him recently at the Hamilton County Justice Center.

No motive has been established for the December 20 shooting and the injured officer’s name has not been released at the request of the family.