Michael Jackson fans are expected to mark the fifth anniversary of the singer's death.
Jackson died on 25 June 2009 at the age of 50, following an overdose of the anaesthetic propofol at his Beverly Hills home.
He had been due to perform at a series of comeback concerts in the UK before his death.
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The soldiers who trained there left their names and messages on the walls of the tunnels.
Researchers were shocked to find the so-called Sussex Declaration hidden away in a record office.
The Hollywood star reportedly looked like he "switched into superhero mode" as he chased the suspect near his home.