Michael Jackson's Doctor Gave Him Propofol Before Death, Source Says

Dr. Conrad Murray was revealed last week as the subject of a manslaughter investigation.

Michael Jackson's personal doctor administered the drug that authorities believe killed the pop star, a law-enforcement source told The Associated Press on Monday (July 27).

The law-enforcement official, close to the investigation, said Dr. Conrad Murray gave the anesthetic Propofol to Jackson the night before his death. The singer had reportedly been receiving the powerful drug to help him sleep.

Propofol is a short-acting, intravenous, nonbarbituate sedative typically used for the induction of anesthesia and sedation in medical contexts. Typically used in a hospital or clinic, it is rarely allowed outside such medical locations; sources are speculating that Murray administered Jackson's possibly lethal dose in the singer's home. Although approved for use in all 50 states, the potency of Propofol is considered dangerous if not used correctly.

Murray was with Michael Jackson when he died June 25 and was recently identified as the subject of a manslaughter investigation. The pop singer's personal physician has endured intense scrutiny since Jackson's death, although his lawyer has insisted that the doctor didn't prescribe or administer anything that killed Jackson.

Last week, federal Drug Enforcement Agents — working with the Houston police and Los Angeles detectives — arrived in a 15-car caravan at Murray's Armstrong Medical Clinic, acting on a search warrant. The focus of that search was Propofol, TMZ reported, and the agents were reportedly looking for "all medical records relating to Michael Jackson."