A judge in the case of a fantasist caught on camera terrorising a vulnerable computer repairman in his own home has demanded answers about whether police missed "obvious" clues to the murder.

Jason Marshall, 28, posed as an MI5 agent when he stripped, gagged and smothered 58-year-old Peter Fasoli with cling film before setting light to his Northolt flat to cover his tracks in January 2013.

The defendant had met Mr Fasoli on gay dating website Badoo and arranged to meet him at his bungalow, on the pretext of a bondage sex session but with the plan of robbing him.

He stole £780 in the days following Mr Fasoli's death and used his bank card to buy a flight to Italy where he continued his violent spree, killing a second man and attempting to murder another in Rome.

For nearly two years, computer repairman Mr Fasoli's death was put down to an accident until his nephew stumbled across hours of harrowing CCTV of his murder stored on his hard drive.

Jason Marshall will face sentencing at a future date

Marshall, from East Ham, east London, who is already serving 16 years for the attacks in Italy, was found guilty of Mr Fasoli's murder and arson following an Old Bailey trial.

The case has raised questions about why the original investigation failed to spot that Mr Fasoli's bank cards were used after his death or that his murder was caught on CCTV.

Peter Fasoli, 58 lived alone in a one-bedrrom bungalow in Ruebens Road, Northolt

On Wednesday August 9, human rights campaigner Peter Tatchell likened the case to that of gay serial killer Stephen Port and said he was "shocked and surprised" the Independent Police Complaints Commission was not investigating.

He said: "This case has echoes of the serial killings by Stephen Port.

"There appears to have been missed opportunities and serious failings of the police investigation.

"Why did they not check the victim's mobile phone, computer, bank transactions and CCTV?"

At a hearing to set the sentencing date of September 26, Judge Nicholas Hilliard QC asked the prosecution to find out whether the original investigation examined Mr Fasoli's bank transactions and social media activity.

The pair had agreed to meet at Mr Fasoli's Ruebens Road bungalow for bondage sex, which was recorded on the victim's webcam

He said: "An examination of Mr Fasoli's financial arrangements, one might think, would show activity after his death and examination on social media would appear to show he had a visitor come in that evening.

"Financial and communications reports would seem to be an obvious starting point.

"I would like some help about that. I raise that now. I would like you to respond to that."

Prosecutor Edward Brown QC replied: "It may be the conclusions of the two fire reports both supported accidental death.

"It may be the police investigation took careful account of that.

"Of course we will help, my lord."

Mr Fasoli inadvertently filmed his encounter with Jason Marshall, which was later discovered on his hard drive by his nephew

Speaking after the sentencing, a spokesman for the police said: "The case was originally treated as non-suspicious, following an investigation by LFB (London Fire Brigade) and police which concluded the fire was accidental, with the most likely cause a faulty light bulb.

"A forensic pathologist who examined Mr Fasoli's body found no evidence of any third party involvement and the inquest held at West London Coroner's Court on 16 August 2013 returned a verdict of accidental death.

"However, around a year later, in autumn 2014, Mr Fasoli's nephew decided to collect the hard drive of his uncle's computer, which was being stored on behalf of the family with other belongings that had survived the fire by a friend in Yorkshire.

Court image of Peter Fasoli's flat after the fire which was previously believed to be the cause of his death

"His nephew knew his uncle had been interested in the family tree and hoped to find research preserved on the computer system.

"Instead, he discovered a number of videos featuring his uncle taking part in sexual activities with other men - including the horrific seven hour film of the encounter with Marshall.

"Mr Fasoli had unwittingly captured his own murder on the web camera that he had on his computer in the living room."

Once the hard drive found by Mr Fasoli's nephew and given to West Yorkshire Police was passed to the MPS, the Met's Homicide and Major Crime Command launched its investigation into Mr Fasoli's murder on 10 November, 2014.

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