A Baltimore jury convicted a man of second degree murder for strangling his grandmother to death after he smoked PCP and heard voices warning him of evil people.

Demond Tyler, 37, who lived with his grandmother, was at home in the 3200 block of Spaulding Avenue on Nov. 4, 2011 and told investigators that the voices said evil people would not look at him. Tyler then grabbed his grandmother, Shirley Tyler, 67, by the throat and demanded that she look him in the eye. He said the pair collapsed on a bed and she smiled at him, according to the state's attorney's office.

Tyler's sister discovered him passed out on a sofa and her grandmother dead in the bed. The medical examiner's office ruled the death a homicide by strangulation.

Tyler is scheduled for sentencing on May 1, 2013 and faces 30 years in prison.

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