Police have made a further appeal for witnesses after a teenage boy was shot and killed in a park.

A murder probe has been launched after 15-year-old Rene Graham was killed in Emslie Horniman Pleasance Park on the evening of July 21.

A crime scene remains in place in the park, and any witnesses, especially those with photos or videos of what happened, have been urged to come forward.

Detective Chief Superintendent Christina Jessah, who is in charge of policing for Kensington and Chelsea, said: “A week on from the terrible shooting that took place in Ladbroke Grove, our thoughts remain with the family and friends of Rene at this devastating time.

“We will continue to work with our partners to provide them with the support they deserve.”

She added: “Any footage may provide officers with a greater sense of the area and events leading up to the terrible incident that has taken place.

“I ask that you please check to see if you have captured anything that may help detectives.

"Tragic incidents like this remind us why it is so important that we continue our unrelenting focus on suppressing violence and gun crime, and catching the offenders who endanger our communities.”

Four men – two aged 21 and the others aged 20 and 25 – who were arrested on suspicion of murder have since been bailed pending further inquiries, the Metropolitan Police said.

Anyone with information is asked to call 101, providing the reference 6343/21JUL.

Information can also be provided anonymously to the independent charity Crimestoppers on 0800 555 111. 

Some reporting by PA.