The Met Police has released this CCTV footage of the suspect
A suspected killer was caught on CCTV chasing a man down the street with a gun in his hand, immediately after a teenager was shot dead in a park.
Rene Graham, 15, was shot in the chest at a music festival in Emslie Horniman's Pleasance Park in Ladbroke Grove, west London, on the evening of Sunday, 21 July 2024. A £20,000 reward has been offered to find his killer.
Detectives have now released footage of the suspect walking towards the park and entering through a play area.
The footage supplied by the Metropolitan Police goes on to show the man leaving the park and trying to make a "quick getaway", before seeing a second victim he then chases down the street while carrying a gun.
Det Ch Insp Alison Foxwell said police had trawled through hundreds of hours of CCTV and taken numerous statements.
"Rene's family have continued to be supported throughout these inquiries, and they remain understandably devastated about his death," she said.
Met Police/Family handout
The charity Crimestoppers said: "Please do the right thing to find justice for Rene"
She said a man in his 20s had recently been interviewed under caution in relation to Rene's murder and that the force continued to investigate all lines of inquiry.
"The person responsible for Rene's murder opened fire in a busy park where dozens of people, including very young children, were enjoying themselves," Det Ch Insp Foxwell added.
Met Police
The murder suspect was caught on camera chasing a man down the street
"We believe there are people sitting on the name of the person responsible," Det Ch Insp Foxwell said.
"This person, who was willing to take the life of Rene and risk the lives of others, remains in your community.
"Now is the time to get in touch with us to give Rene's family the peace they deserve."
The Crimestoppers charity is putting up the cash for the reward.
Regional manager Alexa Loukas said: "Rene was very sadly murdered last year in broad daylight with over 200 people present.
"Please do the right thing to find justice for Rene."