I wouldn't say there's any certainty about the cause of death at this point. It will be weeks before the toxicology reports come back. Murder has a very strong negative connotation, and even if his doctor gave him medication that resulted in his death (which is far from proven), the doctor would have had to MEANT to do it in order to call it murder.
You should take the media reports with a grain of salt. While it strikes me as suspicious that the doctor has not come forward, there are no doubt a lot of facts that are not public knowledge. Michael tried to maintain a private life as much as humanly possible for a man as famous as he is. At this point I think it's better to remember his contribution to all our lives than to dwell on the cause of his death, or any of the negative news that has been a part of his life in the past.
Best wishes.




