A new report today claims that Dr. Conrad Murray, Michael Jackson's personal doc, administered the powerful drug propofol to the pop icon the night before his death.

A law enforcement source revealed to AP that Murray gave Jackson propofol, which authorities believe killed Michael. According to the report, Jackson regularly received the anesthetic to sleep -- and Dr. Murray gave him the drug on the night before his death. The doc tried to revive Jackson, and was with him when he died.

Murray is currently the focus of a manslaughter investigation. When asked about the accusation, Ed Chernoff's rep told "Extra", "We will not be commenting on rumors, innuendo, or unnamed sources."