Detectives investigating the murder of Abraham Badru in Dalston are returning to the scene one month on as they continue their appeal for information about the killer.

Football coach Abraham, 26, was shot in the chest while getting out of his car yards from his mother’s home in Ferncliff Road at about 11.10pm on March 25.

A £20,000 reward has been offered to anyone with information leading to the arrest and prosecution of his killer – who police believe cycled off on a white bike moments after the shooting.

Abraham, who was hoping to start a PhD, had received a police bravery award for giving evidence against a gang who raped a girl on the Frampton Park Estate in 2007. His family said he was “the best son any parent could wish to have”.

Police will be in Ferncliff Road today in the hope of tracking four key witnesses after house to house enquiries led to nothing.

Det Ch Insp Noel McHugh, leading the investigation, said he believed the answer lay “in the community”.

Cops want to speak to:

– A person who walked along Langford Close and then turned into Ferncliff Road just before the murder

– A person in a three-quarter length puffa jacket opposite the day centre in Ferncliff Road at the same time

– A man in dark clothing with a good up and light trainers who was speaking on a phone in Ferncliff Road seconds after the shooting, as Abraham lay on the ground

– A black man, about 5ft 8in with a bushy Afro who was wearing a long-sleeved grey top and ran into Foxley Close from Ferncliff Road just after the shooting

Det Ch Insp McHugh said: “We are keen to trace each and every person who was in the area that night – even if you think you didn’t see or hear anything we need to eliminate you from our enquiries.

“We are particularly keen to hear from anyone who saw a male cycling in the area around the time of the murder on a white bicycle – this could be the killer.

“Abraham was an ambitious and talented young man who had everything to live for. He did not deserve what happened to him and his family do not deserve the torment they are suffering now.

“We are now a month on and every day his family have to live knowing that the person who did this is still out there.

“Someone knows who killed Abraham; I have said the answer lies in the community and I still believe that.

“If you are reading this and you want to contact us but are concerned about your safety, I can assure you that your information would be treated in the strictest of confidence and sensitivity. Help us do the right thing and bring justice to Abraham’s grieving family.”

Abraham had parked his Mercedes opposite the green and his car was facing Downs Park Road. As he opened the boot of his car while on the phone to a friend a man walked up to him and shot him at close range.

Seconds after, a black man in a puffa jacket appears from the rear of Abraham’s car and walks towards Downs Park Road. Police believe he went into the alley leading to Langford Close, got onto a white bike, put a backpack on and cycled back into Ferncliff Road.

The same bike had arrived in Langford Close minutes before the murder.

Police say Abraham had not planned to be at home and police want to speak to anyone who remembers anyone loitering on a white bike who they did not recognise.

Anyone with any information can contact the incident room on 020 8785 8099, via 101 or @MetCC. Alternatively, to remain anonymous call Crimestoppers on 0800 555 111.