DJ AM died with eight undigested OxyContin pills in his stomach and another in his mouth.
The 36-year-old musician – whose body was discovered in his New York apartment on Friday (28.08.09) – had apparently taken the painkillers in quick succession, sparking speculation he committed suicide.
A law enforcement source told People magazine: "He wanted to die. He was going unconscious when he took the last one. He didn't even swallow it."
A crack pipe and some of the illegal drug – which DJ AM had previously battled an addiction to – was also found near his body.
The musician, real name Adam Goldstein, was prescribed Xanax and benzodiazepines to help him deal with post-traumatic stress after surviving a plane crash last year.
It has been claimed he grew dependent on the drugs, causing him to relapse.
DJ AM has admitted to friends he was struggling with substance abuse, and agreed to get treatment shortly before he died.
His representative confirmed: "As soon as his friends, representation and his AA sponsor learned that he relapsed, which was only a couple days before he passed away, they sprung into action to try and get him to agree to go to rehab."
When police arrived at the apartment they found a mirror "propped against the outside", which they moved.
Another mirror was resting on the bedroom door, which shattered as officers gained entry.
The source said: "They pushed it open and it broke. I think Goldstein smoked a lot of crack, barricaded the doors and killed himself."
A Valentine's Day card from the DJ's girlfriend, model Hayley Wood, was also found in the room, along with several photos of the couple.
He and Hayley are believed to have recently split leading to him becoming depressed, but she has refuted the claims.
She said: "Any indication that this horribly tragic accident happened because of a rumoured break-up is not only untrue but disgusting. We were very much together at the time of his passing, and I love him very much."
A private memorial for the DJ is to be held tomorrow (03.09.09) at Los Angeles' Hollywood Palladium.
In reference to the musician's battle with substance abuse, the invite to the ceremony states: "The format of the evening will be in the style of an open 12-step meeting. Adam's friends both from his life in recovery, as well as those from other areas of his life are welcome. We ask only that everyone adhere to the tradition of anonymity and let what they hear there, and who they see there, stay there."