Mark Lindsay has been found guilty of second-degree murder in the 2011 death of Dana Turner.
The decision came down in Red Deer court Friday afternoon.
Lindsay, who is the son of former Edmonton Police Chief John Lindsay, had pleaded guilty to the charge but his defence argued he shouldn’t be held criminally responsible for the killing because he’s been diagnosed with schizophrenia.
READ MORE: Psychologist says accused Edmonton killer Mark Lindsay developed abnormally as a child
Lindsay admitted to stabbing Turner, 31, in both eyes with a pencil while the two were in a vehicle in August 2011, then strangling her with his shoelaces and dragging her out of the vehicle before driving over her twice.
He then put Turner’s body in the trunk of the vehicle, bought a sleeping bag and shovel and buried her remains near Innisfail.
Turner’s body was found in a ditch two months after she was reported missing.
READ MORE: Former Edmonton police chief’s son admits to stabbing woman in eyes with pencil during killing
Turner was reportedly Lindsay’s ex-girlfriend. The pair allegedly met at Alberta Hospital where both were patients at one point.
Lindsay is scheduled to be sentenced on June 6.