Until toxicology reports come in, there is no known cause of death for Michael Jackson, in the sense that no one can say what it was that made his heart stop. However, as fans must already be aware, speculation is running rampant that the singer OD’ed on painkillers, since police found an impressive stack of prescription pills and even anesthetics that should not have been administered at home. On this note, evidence that, indeed, Michael was into heavy drug use is becoming compelling, as TMZ can confirm.

Aside from the fact that most of the doctors that treated the singer at one point in his life are now under investigation by the LAPD, with the Coroner’s Office asking them to hand over all medical records, it seems that Michael also had a too close relationship with all of them. He shared his house and bedroom with each doctor, at one point or another, and spent more time than was appropriate for a simple doctor-patient relationship, which prompted speculation that Jackson was befriending them so that he had someone to feed his habit.

Moreover, reports are now coming in saying that Michael had injection marks on his neck and less visible parts of his body as he used to administer Demerol on his own. A doctor who treated Michael Jackson claimed the singer self-injected Demerol into his system. “We’ve combed through tens of thousands of pages of the official file for the 2005 molestation trial. In the Santa Barbara County Sheriff’s notes, a member of Jackson’s security detail – retired L.A. County Sheriff’s deputy Michael Laperruque – said some doctors were trying to get Jackson off of Demerol, and that one of the doctors in Santa Barbara ‘was upset with JACKSON because he had been self-injecting’.” TMZ writes.

Other, just now unearthed documents and photos, some dating as early as 2003, when Jackson’s house was raided by police following allegations of abuse, reveal that the singer was in the habit of scoring painkillers in his staff’s name. Deputies in charge of the raid at the time found not only bottles with other people’s name on them in Jackson’s cabinet, but also medical equipment suggesting that he was feeding his addiction right at home, such as IV stands, needles and vials of powerful drugs. That, combined with the fact that Michael Jackson literally had surrounded himself with people willing to please him, including his doctors who reportedly did anything he asked them to, might have eventually led to his untimely death at just 50.

The Jackson family, it is being said, did not know the full extent of Michael’s situation, since he had instructed his doctors to shield him from his brothers and sisters, as he knew they were thinking of staging an intervention, it is being said. Because of this, Joe Jackson, Michael’s father, is now telling the media that he’s convinced his death did involve foul play. A homicide police investigation is pending on toxicology results.