Detectives have issued an appeal for anybody with information about a fatal stabbing that took place on Prentis Road, SW16 to come forward to police.
Police were called at approximately 4.15pm on Thursday, 10 June to Prentis Road to reports of stabbing.
Officers and the London Ambulance Service (LAS) attended the scene and found a male with a stab wound to the chest.
He was taken to a hospital in central London where he was pronounced dead at 4.51pm.
Detectives from the Met’s Specialist Crime Command have launched a murder investigation.
Detective Chief Inspector Wayne Jolley, leading the investigation, said: “A dedicated team of officers are working tirelessly to find the people responsible for this attack. I urge anyone with any information to come forward to police. We are aware there are several outstanding witnesses and it is vital we speak to these people to help establish the circumstances around what happened.
“Were you on Prentis Road between 4:10pm and 4.25pm? Did you witness an altercation, or see anyone running away?
“I am appealing to people who live within this area who may have private CCTV and drivers with dash cams who were travelling through the area at the time of the incident. You may have captured significant footage that we need to recover as soon as possible.
“I also urge anyone within the community who may have information about this murder to come forward to police. We are keeping an open mind as to the circumstances behind the attack and information given to police will be treated in the strictest confidence.
“Please call police on 101 quoting reference CAD 5897/10June. To remain anonymous, contact Crimestoppers on 0800 555 111.”
Six males and three females are in custody at police stations in south London having been arrested on suspicion of various offences.
Police believe they know the identity of the victim, who is in his late teens, and have informed next of kin. Formal identification and a post-mortem examination will follow in due course.