Dr. Conrad Murray, Michael Jackson’s personal physician, left Jackson alone while the singer was under the influence of the powerful anesthetic propofol to make telephone calls the morning the performer died, the Los Angeles Times reports, citing three sources familiar with the ongoing police manslaughter investigation into Jackson’s June 25 death. 

Jackson had been using propofol as a sleep aid on and off for a decade, one law enforcement source told The Times.

Dr. Murray told investigators that he had given Jackson doses of the drug repeatedly since taking the job as his doctor in May, the sources told The Times, adding that he said he felt comfortable leaving Jackson by himself because there had never been a problem in the past. It’s unclear how long Jackson was alone.

The sources told The Times that when Dr. Murray returned, Jackson was not breathing, and that the doctor performed CPR on Jackson while another person called 911. Paramedics later rushed Jackson to UCLA Medical Center, where he was pronounced dead at 2:26 p.m.

–Tom Gilbert