A mum whose son was killed in a shooting in Greenwich believes her brother was wrongly jailed for the murder and is challenging his conviction.

Genson Courtney was 23 years old when he was shot at point-blank range through the eye with a handgun as he left his girlfriend’s home in Banning Street, Greenwich, on July 3, 2011.

His uncle David Pinto, and getaway driver Robert Bleach, both from Greenwich, were found guilty of murder at the Old Bailey and jailed for life on May 23, 2013.

The case was considered closed at that point, but Genson's mum, Jennifer Pinto, believes her brother is innocent and the trial result was incorrect.

Jennifer Pinto said: “My brother David helped raise Genson – it makes absolutely no sense that he would’ve killed him.

“I’ve lost my son and now I’m losing my brother too. I feel totally let down by the police’s investigation.

“If you know something that could help the lawyers prove his innocence, please, please let them know.

“I can’t fully grieve for my son until my innocent brother is set free.”

The case has been taken up by the legal charity Centre for Criminal Appeals’ Innocence Initiative, which specialises in investigating potentially wrongful convictions.

Lawyers from the charity have sent submissions arguing that David Pinto’s conviction is unsafe to the Criminal Cases Review Commission – the body with the power to refer cases back to the Court of Appeal.

Emily Bolton, David Pinto’s lawyer, said: “We took on David’s case because there’s no direct evidence implicating him in the murder – the prosecution’s case was entirely circumstantial.

“There are strong signs the police got this case wrong – and an innocent man is in prison as a result. Anyone with information is welcome to get in touch with us.”