A 17-year-old boy has been seriously injured after being stabbed near a south London park in the early hours of Sunday.
Southwark police said they were called to a report of a man being chased by a gang of men on Phelp Street, Walworthin the direction of Burgess Parkat 12:45 p.m.
Two of the group are said to have knives.
Police and paramedics found a 17-year-old boy who had been stabbed.
He was treated on the spot before being taken to Saint Thomas Hospital. He is still in a worrying condition.
The investigation into the incident is still ongoing.
Officers urged anyone who has information or was nearby at the time to contact them at 101 citing the crime reference CAD258 02APR. You can also contact the independent charity Crimestoppers 100% anonymously on 0800 555 111 or visit crimestoppers-uk.org.