Michael Jackson's deathbed doctor waited over an hour to call for help when he realized the pop star wasn't breathing, and could not be found for hours afterward, according to a search warrant unsealed Friday. The documents, which police filed to support their request to search a Las Vegas pharmacy in August, provide new insight into what went on at his Los Angeles mansion on June 25 when the 50-year-old “King of Pop” went into cardiac arrest and died. The warrant states that personal physician Conrad Murray of Las Vegas told authorities in interviews days after the death that he administered the powerful anesthetic propofol only after trying many other medications to help Jackson sleep, and after Jackson's “repeated demands/requests” for the drug. By Murray's own account to police, he did not call for help until 12:22 P.M., more than an hour after he realized Jackson wasn't breathing. He also told investigators he was not the first doctor to give the pop star propofol. Murray recounted under questioning by a Los Angeles police detective that Jackson told him he was given propofol by two unnamed doctors in Germany, the affidavit states. Murray has admitted giving Jackson a 25-milligram dose of propofol the morning he died, according to police records.