Two years on, Jackson death still casts shadow

Two years after Michael Jackson's shock death, the mystery over exactly how he died continues to fuel legal wrangling, conspiracy theories and family strains over the King of Pop's clouded legacy.

While fans are expected to pay their respects this weekend - including by dropping red roses from the air over his famous Neverland ranch - many questions remain over his death on June 25, 2009 aged only 50.

His personal doctor Conrad Murray is still awaiting trial on manslaughter charges for allegedly giving Jackson an overdose of powerful sedative propofol to help him sleep on the fateful morning at his Beverly Hills mansion.

The trial was to have started in May, but has been delayed until September after his defense lawyers - expected to argue that Jackson effectively killed himself - said they need more time to prepare.

Days ahead of the second anniversary of his death, Jackson's sister La Toya published a new book reiterating her claim that he could have been murdered, and had voiced fears to her that he would be for financial reasons.

"I truly feel Dr Murray was simply the fall guy. I think it's too easy to blame him. I think the investigation needs to go a bit further than just stopping at Dr Murray," she said ahead of the book's publication this week.

"There are a lot of other people that are involved in this. My brother told me," she said, while declining to elaborate.

Many of the lurid details of what happened on the day Jackson died have emerged in legal wranglings over the last two years to prepare for his doctor's trial.

The controversial singer - preparing for a series of come-back concerts in London, four years after being acquitted on child sex abuse charges - was being treated for chronic insomnia including by using propofol.

The trial will center on the suggestion that Murray mistakenly administered a fatal overdose, and failed to notice in time because he was busy on the phone with a series of female friends.

The defense will reportedly argue that Jackson could have administered an extra dose of propofol by himself, while Murray was out of the room, effectively provoking his own death.

Whatever the outcome of the trial, expected to be watched closely by Jackson's millions of fans around the world, it will likely only fuel publicity for the multi-million-dollar industry based on the performer's legacy.