Murder detectives investigating the death of a well-known Hackney DJ have put up a reward of �20,000 for help in tracing his killer.

Wayne Powell, 38, was shot dead in Chingford on Monday July 5 2010. His girlfriend was five months pregnant with their baby.

A reward of up to �20,000 is now available for information leading to the prosecution of those responsible.

Wayne, a keen bodybuilder and a customer assistant for the London Underground at Seven Sisters, was sat in his black BMW close to the gym he used in Higham Station Avenue at about 11:10pm when a lone gunman approached the vehicle.

He got out of the car to talk to him.

The suspect fired four shots from a handgun before calmly making off along a footpath in the direction of Coningsby Gardens.

Wayne, who grew up in Kyverdale Road in Stamford Hill but lived in Stonebridge Road, Seven Sisters, was taken to the Royal London Hospital where he was pronounced dead.

Radio listeners paid tribute to the music-lover, known as DJ Connoisseur, following the shooting.

Anne Boriel, Wayne’s partner and mother of their son, also Wayne, said: “We can think of no reason why anybody would want to kill him. He was a big strong guy but never used his physical presence to bully or gain advantage; he would shy away from confrontation and help anyone whenever he could do so.”

Detective Inspector Dave Rock of Operation Trident said: “Wayne Powell was a good man. He was not involved in criminality or gangs.

“He did not deserve to die in the way he did. I am confident there are people in the community who know who is responsible for this shooting and I would urge them to come forward.”

Police believe the gunman was black, about 5ft 10ins tall and wearing a tracksuit. His motive remains unclear.

Anyone with information should call 020 8733 4704 or Crimestoppers anonymously on 0800 555 111.