Search Warrant Affidavit: 'Lethal Levels' of Drug Killed Michael Jackson

Drug Enforcement Agency investigators are seen through a window during a raid at the Mickey Fine Pharmacy in Beverly Hills last Friday. Federal drug agents raided this pharmacy Friday as part of the ongoing investigation into Michael Jackson's death. (AP Photo/Damian Dovarganes)

The July search warrant affidavit that officials used to raid the Houston offices of Michael Jackson's personal doctor was unsealed today, offering up what has been speculated for weeks: "lethal levels" of anesthetic propofol killed the pop star.

Conrad Murray told poice he had been treating Jackson for insomnia for about six weeks, according to the LA Times. He would give 50 milligrams of propofol every night, but fearing that Jackson was getting addicted to it, Murray began to wean him off of it by lowering the doses.

According to the affidavit, in the early morning hours before Jackson's death, Murray withheld propofol and tried numerous drugs starting with valium at 1:30 a.m. Still not asleep by 10:40 a.m., Jackson demanded propofol and Murray complied. 20 minutes later is when Jackson was found not breathing.

Although Murray administered propofol, no evidence has surfaced proving he "purchased, ordered or obtained the medication under his medical license or Drug Enforcement Administration tracking number," said the Times. Murray said he wasn't the only doctor that had given Jackson the drug. Involuntary manslaughter charges could be the end result for him as the investigation continues.