A Mills County jury has found a man guilty of fatally shooting his 18-year-old ex-girlfriend outside of her Glenwood, Iowa workplace in September.

Prosecutors say it took the jury a little more than two hours Friday to convict 27-year-old Mark Troutman of Sylvania, Ohio with first-degree murder in the slaying of Kathryn Weber. She was found bleeding outside of the Linwood Estates assisted-living facility on September 17th and died at the scene.

Troutman was arrested that night at a Glenwood motel. Authorities say Troutman was Weber's ex-boyfriend and that he shot her because he was distraught over their breakup. Troutman's defense attorney, Eric Nelson, had argued that Troutman intended to commit suicide in front of Weber, and hadn't planned to harm her.

Troutman faces life in prison when he's sentenced February 13th.