A second, independent, autopsy has been carried out on the body of Michael Jackson, as speculation mounts over the circumstances of his death. His family called for a new examination as questions were raised about the singer’s reliance on prescription drugs. Jackson’s lawyer has said the family had grown increasingly worried about his use of painkillers, and had urged him to stop.Jackson’s private physician, Dr Conrad Murray, has been interviewed by Los Angeles police. He’s believed to have administered the powerful painkiller Demarol before Jackson suffered cardiac arrest, but insists he is in no way responsible for what happened. The singer’s family also want to speak to Dr Murray. The first autopsy, carried out by the Los Angeles County coroner, found no evidence of foul play, but ordered more toxicology tests. The cause of death won’t be established until those results are known, which may not be for four-to-six weeks.