A suburban Chicago man was found guilty of first degree murder Tuesday for the 2009 stabbing deaths of three members of his girlfriend's family in Hoffman Estates.
D'Andre Howard, 26, faces up to life in prison for the crimes.
Howard stabbed his then-girlfriend's father, sister and grandmother to death following an argument at the family's Hoffman Estates home.
Fifty-seven-year-old Alan Engelhardt, 18-year-old Laura Engelhardt and 73-year-old Marlene Gacek were all killed in the attack.
Defense attorneys did not dispute that Howard committed the crimes, but claimed he was legally insane at the time.