A London shopping centre has been evacuated after a 21-year-old man was stabbed to death inside the complex.
Police arrested an 18-year-old man on suspicion of murder after the victim died at Brent Cross Shopping Centre in Hendon, north London.
Another man, also believed to be 18-years-old, was arrested on suspicion of affray.
Officers descended on the scene after receiving reports of a group of men fighting at around 6.45pm today.
They joined members of the public in administering first aid to the victim while waiting for the paramedics to arrive, however the man sadly died at the scene.
Chief Superintendent Sara Leach, who is in charge of policing in north west London, said: “My thoughts are with the loved ones of the young man who has been killed in this incident.
“I would like to offer my thanks to the members of the public who came to his aid. They showed considerable courage.
“Two people have been arrested and an investigation is already under way. We will do all we can to identify and bring to justice those responsible.
“The public can expect to see a heightened police presence in the area through the rest of this evening and in the days to come.”
Footage shared on social media shows police escorting shoppers out of the shopping centre after the stabbing.
Pictures show an air ambulance and police cars outside the complex.
A London Ambulance Service spokesman said: “We were called at 6:43pm this evening (04 May) to Brent Cross shopping centre, NW4, to reports of an incident.
“We sent a number of resources to the scene: an incident response officer, two medics in response cars and an ambulance crew. We also dispatched London’s Air Ambulance.
“Sadly, despite the extensive efforts of medics, a person was pronounced dead at the scene.”