A teenager is fighting for his life in hospital after being shot outside a bar near Wembley Stadium.
Forensic officers established a crime scene after the shooting took place about 5.30am in north west London.
Police say the 18-year-old was gunned down near a bar on Atlantic Way yesterday morning, leaving him critically injured.
He was taken in critical condition to a major trauma centre and is still being treated, the Metropolitan Police said.
The investigation is still ongoing and no arrests have been made.
Chief Superintendent Tony Josephs said the force recognised "the shock and impact this incident will have on the community".
"There will be an increased police presence in the local area," he added.
"We'd urge anyone who may know something about this incident, however small it may seem, to please get in touch and let us know."
Outside Wembley Stadium and nearby Atlantic Crescent
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The South Way walkway to Wembley Stadium remains closed.
A huge bloodstain and abandoned clothing can still be seen within the crime scene, according to The Sun.
Forensic officers examined a bottle of brandy outside the Crystal nightclub.
The Met police have informed the teenager's next of kin and they are being supported by officers.
The Met Police have contacted the teenager's next of kin
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A London Ambulance Service spokesman said paramedics were sent out after reports of a shooting.
"We sent a number of resources to the scene including an ambulance crew, paramedics in fast response cars, an advanced paramedic and an incident response officer," the spokesman added.
"We also dispatched a trauma team in a car from London's Air Ambulance.
"We treated a patient at the scene and took him to a major trauma centre."
A Transport for London statement indicated that buses on the 440 route, between Turnham Green and Wembley First Way had been diverted in both directions.
"Buses towards Wembley are terminating at Brent Civic Centre (E), with no service between Olympic Way and First Way," the statement read.
"Buses towards Turnham Green are starting from Lakeside Way ... with no service at stops First Way, Olympic Way and Brent Civic Centre."