The role of heavy pain-suppressant drugs in Michael Jackson’s life and possibly in his death continues to come into focus ahead of Tuesday’s planned memorial service, with new allegations, Friday, that the powerful anesthetic Diprivan had been found in the pop-star’s home. Citing a single, unnamed law-enforcement source, the Associated Press made the Diprivan claim on Friday. Diprivan, also known as Propofol, is typically used in hospital operating theaters as an intravenous anesthetic.