The director of the controversial documentary Leaving Neverland has fired back at Michael Jackson 'truthers' who refuse to believe the pop star was a paedophile.

The two-part HBO series featured disturbing allegations by Wade Robson and James Safechuck that Jackson sexually abused them when they were children.

In the weeks since Leaving Neverland aired, devoted fans of the 'King of Pop' have leapt to his defence by staging protests and launching a campaign against the film.

But speaking on Channel Seven's The Morning Show, filmmaker Dan Reed refuted claims Michael Jackson was being falsely accused, and even mocked his supporters' campaign slogan, 'Facts don't lie. People do'.

'I interviewed police investigators and none of them had any doubt at all about [Jackson's] guilt,' Reed said.

'I did a massive amount of research - there's no doubt at all Jackson was lying for a long time. Facts don't lie, but paedophiles do.'

Reed, who is better known for his investigations into war and crime, also told of how his unlikely partnership with Jackson's accusers came about.

'It was completely accidental, he said. 'I approached them [Robson and Safechuck] through their lawyers and they decided to meet me.'

Elsewhere in the interview, Reed said he disagreed with radio stations that have decided to stop playing Jackson's songs following the accusations.

'The aim was never to topple Jackson from his pedestal,' Reed said. 'I wasn't trying to get Michael Jackson or his music banned.

'People need to face up to the fact he was a paedophile, but continue to separate the art from the man.'

- Daily Mail