Federal agents searched the home of Michael Jackson's doctor, Conrad Murray yesterday as focus turned to the role a powerful sedative may have played in the singer's death.
Officials from the Drug Enforcement Administration were seen entering Dr Murray's house and his office in Las Vegas.
Yesterday an official told the Associated Press that Jackson enlisted a number of doctors – including Dr Murray – to administer propofol via an intravenous drip. The law enforcement source added that on the day the singer died, Dr Murray gave him the drug sometime after midnight.
Officers are working on the theory that the powerful sedative caused his heart to stop, it has been suggested. The raids followed that on Dr Murray's clinic in Houston, Texas, last week. He has not been named as a suspect but court records have identified the physician as the subject of a manslaughter investigation.