A pedestrian has been stabbed to death in broad daylight on a London street.
They were one of two people stabbed in Lilestone Street, Marylebone, with the other rushed to a major trauma centre.
They died at the scene after the Metropolitan Police and London Ambulance Service paramedics were called to the scene in West London, just before 3.30pm.
A London Ambulance Service spokesperson said: “We were called at 3.23pm today (28 November) to reports of a stabbing on Lilestone Street, City of Westminster.
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"We sent a number of resources to the scene, including an ambulance crew, an advanced paramedic, medics in two fast response cars, an incident response officer and a clinical team leader. We also dispatched London’s Air Ambulance.
"We treated two patients at the scene and took one person to a major trauma centre. Sadly, despite the best efforts of our crews, a person died at the scene."
The Met Police said: "Police were called to 15:23hrs on Monday, 28 November to reports of a stabbing in Lilestone Street, NW8.
"Officers attended along with the London Ambulance Service and London's Air Ambulance. Two males were found with stab injuries.
"One male, believed to be aged in his 20s, was pronounced dead at the scene; enquiries are ongoing to identify and inform next of kin.
"The second male – no further details – has been taken to hospital for treatment; condition awaits."
Detective Chief Superintendent Owain Richards, the local policing commander for Westminster, said: "This is a tragic incident and I am deeply saddened that another young life has been lost to knife crime on the streets of London. I know the community will join me in sending our thoughts to the victim's family at this awful time.
"I appreciate people will want answers about what happened, but I would like to ask that our dedicated team of detectives are given the time and space they need to conduct their enquiries. A large number of officers will remain in the area and I'd encourage anyone with immediate concerns to speak to them."
No arrests have been made.
At this early stage any witnesses are asked to call 101 quoting CAD 4334/28Nov. To remain anonymous contact the independent charity Crimestoppers on 0800 555 111.