FILE - In this March 17, 2005 file photo, Pop star Michael Jackson arrives at the Santa Barbara County Courthouse in Santa Maria, Calif., to begin Jackson's trial on charges of child molestation. (AP Photo/Michael A. Mariant, file)AP – Michael Jackson’s personal doctor administered a powerful anesthetic to help him sleep, and authorities believe the drug is what killed the pop singer, a law enforcement official told The Associated Press on Monday.