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The man accused of shooting and killing Officer Clifton Lewis during a 2011 robbery at convenience store has been found guilty of first-degree murder, attempted murder, and armed robbery.

According to the Chicago Sun-Times, the verdict in the case against 31-year-old Alexander Villa was handed down by a Cook County jury late Thursday.

Villa was reportedly one of two gunmen who entered the store in an effort to rob it when they encountered Lewis, who was off-duty and working a second job as a security guard.

A co-defendant—identified as Edgardo Colon—was found guilty two years ago and was sentenced to 84 years in prison.