for propofol on the day he died. >> he said, i can't function if i don't sleep, so i agreed that i would switch over to the propofol. >> then murray said he sat at jackson's side. >> i monitor ed him, saw his oxygen saturation was stable. heart rate, everything looks stable. then i needed to go to the bathroom. i came back his bedside and i was stunned in the sense that he wasn't breathing. >> dr. murray not only admitted he gave michael jackson propofol in the hours before jackson died but said, oh, sure, i've been giving it to him for weeks every night for 60 days so conrad murray's statement was critical because he gave -- it gave the police and the prosecutor everything they needed to charge him with a crime. >> to finish his case prosecutor david walgren turned to conrad