The emergency services were called to the High Street just after 7 o’clock last night where they found the 17 year old with stab wounds.

He was treated at the scene but despite paramedics efforts, he died as a result of his injuries.

The investigation is being led by Detective Chief Inspector Mike Nolan of the Met’s Specialist Crime Command. He said: “This afternoon, as Londoners go about their day, a family is reeling from the shock of losing a young family member to violence in our city.

“Help us identify and remove the dangerous individual responsible from your streets – tell us what you know, what you have heard, or share any images or footage you may have.

“My officers are waiting to hear from you, whether you call, email, or speak anonymously through Crimestoppers – If you can help please do the right thing and get in touch.

“Our investigation, though in its early stages, is moving at a pace and while we work to establish the circumstances surrounding the murder, our thoughts are with the young man’s family as they struggle to come to terms with their loss.”

Police and London Ambulance Service were called to Sutton High Street at around 7.10 last night following reports that a teenager had been stabbed.

On arrival, officers found a 17-year-old boy suffering with stab wounds; he died at the scene.

Next of kin have been notified and they are being supported by specialist officers.

A post-mortem examination will be scheduled in due course.

At this early stage there have been no arrests.

Chief Superintendent Andy Brittain, leading policing for the Met’s South Area Command, said: “I know that those who live and work in Sutton will be shocked and saddened at the loss of a young life on the streets that they call home. I share those emotions and would like to reassure local people that we are doing everything we can to support our homicide colleagues in identifying and apprehending the person, or persons responsible.

“I urge anyone who is concerned to approach officers on patrol and speak with them or get in touch with their Neighbourhood policing team.

“Our thoughts are with the victim’s family at this sad time. I would like to thank the community for their patience as we carry out our enquiries, and urge anyone with information concerning this incident to get in touch.”

Anyone with information concerning this incident should call the Incident Room direct on 020 8721 4622; call police on 101 or post on ‘X’ @MetCC quoting CAD 6107/05DEC.

To remain 100% anonymous call the independent charity Crimestoppers on 0800 555 111.