Source: Jackson's Needle Marks on Neck and Arms

Sun., Jul. 12, 2009 12:40 PM PDT by Breanne L. Heldman

Pool photographer/Getty Images

We may not have the results of the toxicology report yet, but one thing from Michael Jackson's autopsy is certain.

Not only were needle marks found on the star, but they were located on his neck and arms, a source tells E! News. Investigators are hard at work trying to determine whether the marks were from IV needles used to administer the powerful sedative Diprivan.

Dr. Conrad Murray, the cardiologist with Jackson at the time of his death, continues to maintain his innocence.

When E! News spoke with the doc's spokeswoman, Miranda Sevcik, on Friday, she claimed tales of police requesting additional documents were false.

"That's absolutely not true," she told E! News. "We gave everything that the investigators asked for on June 27th when we had that last long interview."

Although Murray issued a statement last Monday saying he never provided Jackson with any life-threatening drugs, Sevcik could not comment on Murray's knowledge of anyone else providing Jackson with medication, nor was she willing to comment on any specific medications.

"Our agreement was to not share any more details of the investigation so we can't speak to the Diprivan," she said. "This was not our decision. This is what was requested of us by Los Angeles investigators. They thought if we talked about it, it would slow them down."

—Reporting by Ken Baker and Whitney English