Adeyemi was fatally shot at 23.30hrs on Friday 5 June in Brackenfield Close, E5, detectives investigating the murder said.
Detective Chief Inspector Paul Considine, leading the investigation, said: “Following initial enquiries we know that there were people in Brackenfield Close at the time of the shooting.
Homicide detectives from the Specialist Crime Command have released an image of a car they believed was used in the murder of Adeyemi.
The car, a large Volvo estate, was recovered by detectives on the morning of Saturday, 6 June after it had been abandoned in Cowper Road, N16 bearing the false registration plate EX18EXE.
Police Borough Commander Marcus Barnett described Adeyemi’s death as “a concerning time for Hackney residents,” adding, “Our thoughts remain with the victim and his family during this devastating time for them.”