Los Angeles, Aug 26 (DPA) A lawyer for Michael Jackson's doctor said Tuesday that allegations that the physician administered a deadly cocktail of drugs to the singer in the hours before he died were an unsubstantiated 'police theory'.

Attorney Edward Chernoff released the statement a day after officials revealed new details about the cause of Jackson's death, which were contained in a police affidavit used for a search warrant for Dr Conrad Murray's office in Houston, Texas.

The warrant revealed that coroner's office investigators found lethal levels of the fast-acting, powerful anesthetic propofol in Jackson's body at the time of his death. It also said that Murray told investigators he had given the singer a combination of sedatives in the hours before his death June 25, topped by a dose of propofol.

'Much of what was in the search warrant affidavit is factual,' Chernoff said. 'However, unfortunately, much is police theory. Most egregiously, the timeline reported by law enforcement was not obtained through interviews with Murray, as was implied by the affidavit.'

The coroner's office has completed its investigation, but is withholding the results pending the completion of the police probe into the 50-year-old singer's death.

The affidavit contained the first official details of the coroner's report.

'The Los Angeles chief medical examiner-coroner, Sathyavagiswaran, indicated that he had reviewed the preliminary toxicology results, and his preliminary assessment of Jackson's cause of death was due to lethal levels of propofol (diprivan),' according to the search warrant affidavit released by the Harris Country District clerk.