HOLLYWOOD -- As the rumour mill continues to spin out of control ahead of the imminent Michael Jackson toxicology report, one thing is looking more and more certain -- and that's the narrowing focus on Jackson doctor Conrad Murray in an ongoing manslaughter investigation.

Over the weekend we spoke with a source within the Los Angeles District Attorney's office who confirms there's evidence that Murray did in fact inject Jackson with the powerful intravenous anesthetic Propofol (also known by its brand name, Diprivan) in the early morning hours of the day he died.

It was just one of several prescription drugs that Jackson took regularly to deal with chronic insomnia.

We also heard, from someone associated with the investigation, that Jackson apparently "died" more than once on June 25 and that the final time his heart gave out, Dr. Murray spent 90 minutes trying to revive him before the 911 call was ultimately made.

The drugs Jackson took to address years of terrible sleeplessness were in addition to the various painkillers he'd taken on a daily basis.

Our sources also confirmed reports that Jackson's body was covered with needle marks at the time of his death, although Dr. Murray admitted only to personally administering injections in Jackson's arm.

Much more is expected to come to light after the L.A. coroner's office makes the delayed toxicology report public this week, but in the meantime we've been rereading J. Randy Taraborrelli's revealing 1991 biography, Michael Jackson: The Magic and the Madness.

Among the many passages in the book that have since proved to be chillingly prophetic was a quote by Steve Howell, Jackson's one-time official video historian, who recalled Jackson saying that "there would be two special times in his life. One would be when he marries and the other when he dies."

Eerie.