A 21-year-old man has been stabbed to death inside a north London shopping centre.
Police were called to reports of a group of males fighting at Brent Cross Shopping Centre at about 6.45pm on Tuesday.
Officers attended and found the victim, who had been stabbed.
First aid was started by police and members of the public, while London Ambulance Service and London Air Ambulance were also called to the scene.
However, despite the best efforts of everyone involved, the man died at the scene.
Police said efforts were underway to inform his next of kin.
An 18-year-old man was arrested nearby on suspicion of murder.
A second man, also believed to be aged 18, has been arrested on suspicion of affray.