He implies that she has overdosed on painkillers I think, but so far there doesn't seem to be any official news about the cause of death, I think that's just his speculation. It will be very interesting to see if and when they do report on that, how believable it is as suicide. I feel there should be a lot more question marks over a suicide when the person who has done it has previously said 'please don't ever believe if i appear to have killed myself, i won't have done it'. I'm amazed this isn't a bigger story. Then again, why am I amazed?