An expert claims an actor who fell to his death from a block of flats after a row with Warwickshire rocker Pete Doherty was probably murdered. Despite a desperate fight for justice by his mum Sheila, Mark Blanco's mysterious death at a party in 2006 remains unexplained.

But fresh analysis of CCTV shows he was “thrown over the balcony", FBI instructor Grant Frederick claims, Mirror Online reports. Mark had been kicked out of the “crack den” flat, after urging Doherty to come and watch him on stage, by the Bedworth singer’s literary agent at the time Paul ­Roundhill.

Mark Blano returned two minutes later and was ejected by Roundhill and minder Johnny ­“Headlock” ­Jeannevol. Mark returned to the flat and then fell to his death. Police investigated but there have been no charges.

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They suggested the Cambridge graduate’s death was suicide, which a coroner rejected. The case features in new Channel 4 documentary Pete Doherty, Who Killed My Son? which tells of Sheila’s fight for justice following the initial botched police investigation.

Mr Frederick has examined footage of the fall. Using 3D and and ­overlaying new film on the original images allowed him to “step back in time”. Mr Frederick said: "The reverse projection clearly shows there couldn’t be just one person on the balcony.

"What I would see is that Mark has come out and somebody has taken Mark and is putting him over the balcony. If the measurements and the distance are correct, then Mark was thrown over the balcony, Mark was murdered."

Mark Blanco, pictured here with his mum Sheila, died after plunging from a balcony at a party in east London in 2006
Mark Blanco, pictured here with his mum Sheila, died after plunging from a balcony at a party in east London in 2006

Mr Frederick claimed he asked Met Police to carry out reverse projection work 10 years ago but they failed to. John Kennedy, a forensic video analyst who worked on the James Bulger case, also said the footage suggested Mark was pushed.

Mr Kennedy said: "He didn’t appear to be in control of his fall. I formed the view he may be unconscious when he came off the balcony."

Witness Naomi Stirk, one of six people in the flat at Whitechapel, East London, on the night of the tragedy, told the programme Mark had an argument with former Libertines star Doherty, now 43. She said: "Peter was motioning with his eyes to Johnny and Paul in a way that they would understand to say ‘help me out here’. So they escorted Mark out.

Roundhill has admitted setting fire to Mark’s hat and punching him as he kicked him out the first time. CCTV shows former Bedworth schoolboy Doherty stepping over Mark and fleeing with Jeannevol. Sheila said: "He’s ­absolutely callous." Images of Mark that night show him in ­intensive care with a tube in his mouth. He died a day later.

Pete Doherty performs live during a gig at The Barfly in north London Friday 6 August 2004.
Pete Doherty performs live during a gig at The Barfly in north London Friday 6 August 2004.

Sheila said: "I was the last person to say goodbye. I put my head on his chest and I just promised I would find out what happened." Mark was due to star in The ­Accidental Death of an Anarchist play as a man thrown to his death from a window.

In Doherty’s book, A Likely Lad, he admitted he “legged it” after finding Mark because he didn’t want any trouble following run-ins with police. The former heroin addict, who dated model Kate Moss from 2005 to 2007, told the show: "I am sorry for Mrs ­Blanco’s loss. I welcome any ­assistance people can give her."

Mr Roundhill added: "Mark was a good friend. I would not protect anyone who had a part in his death." Jeannevol had confessed to police to killing Mark but later retracted it, claiming he was high on cocaine. The Met said its investigation into the death “remains ongoing”.

* Pete Doherty, Who Killed My Son? is on Channel 4, Monday at 10pm.

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