Court papers filed in Texas specifically identify Michael Jackson's personal physician as the target of a police manslaughter investigation, the Los Angeles Times reported Thursday.
Dr. Conrad Murray's Houston office and a storage unit were raided Wednesday by Los Angeles Police Department and Drug Enforcement Administration agents. Murray's attorney, Edward Chernoff, confirmed after the raid that investigators were looking for "evidence of the offense of manslaughter."
According to the search warrant filed in Harris County Superior Court, authorities were looking for "items constituting evidence of the offense of manslaughter that tend to show that Dr. Conrad Murray committed the said criminal offense," confirming that Murray himself appears to be a target of the probe, according to The Times' online report.
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During Wednesday's raid, investigators seized two computer hard drives, a Medical Board certificate, letters to a former employee, a list of contacts and papers pertaining to his practice, The Times' website reported.
Investigators also seized 27 vials of phentermine, a prescription appetite suppressant, and one tablet of clonazepam, a muscle relaxant, according to the report.
Murray was at Jackson's rented Holmby Hills estate when the singer was found unconscious June 25.
Jackson's cause of death still has not been determined, pending the completion of toxicology tests. Widespread media reports have indicated that the 50-year-old singer may have died from complications related to prescription drugs he was taking.
Some reports stated that Jackson may have received an intravenous dose of Diprivan, a powerful sedative and anesthetic normally only administered in a hospital setting.
Officials from the Los Angeles County coroner's office have asked for another interview with Murray, who already has been questioned twice by LAPD detectives, Chernoff told The Times, saying the doctor was cooperating fully with authorities.
Murray has denied administering narcotics or other medications that could have caused Jackson's death.