According to reports the talented Dublin actor died on a friend's couch in LA from a heroin overdose. When he was found he had a syringe in his pocket and a packet of heroin.
The Los Angeles coroner stated that tests showed that 5ft 7ins Glenn had .32ml of morphine in his blood and he was 12st 7lb when he died. He also had needle marks in both arms.
According to reports the 32 year old's spleen, liver, and lungs were all congested and his heart was enlarged. The official cause of his death on December 2nd 2002 was given as "morphine intoxication" due to a lethal heroin injection.
Glenn had a tattoo Erin Go Bragh (Ireland Forever) on his right shoulder and a harp on his left.