Detectives offer £20,000 reward to find killer who shot dad-of-two in the head

‘We have continued our momentum behind this investigation to ensure that those responsible for killing Jason Diallo and seriously injuring another man are held accountable,’ Detective Chief Inspector Kelly Allen, the senior investigating officer, said.

‘We are now in a position to release an image of this man, who we would like to speak with in connection with this ongoing investigation.

‘If you know who he is or have any information which could help us, please get in contact.’

Two men – Mushin Mohamed, 28, and Tyrelle Joseph, 24 – received 35 years and seven years in prison at the Old Bailey in 2022 for their roles in the shootings.

But an investigation by the Met’s Specialist Crime North believes there are two more suspects – including the gunman – believed to be involved who are yet to be caught.

Det Ch Insp Allen said there was no evidence to suggest that either victim was ‘known to one another or those convicted, suggesting that this was a completely unprovoked and violent incident’.

Mr Diallo was shot around 10pm on November 1 and died at the scene after despite the best efforts of the emergency services.

He was taken to hospital with non-life threatening gunshot wounds and told officers he had been followed by three men driving a car who began shooting at him.

Mohamed was later found guilty of murder and attempted murder and sentenced to life in prison to serve a minimum of 35 years.

Joseph was found guilty of assisting an offender and jailed for seven years after being identified as someone who had helped Mohamed and the unidentified suspects leave the scene.

Speaking after the sentencing in 2022, Mr Jason’s Diallo wife, who did not wish to be named, said the night her husband died will haunt her forever.