An urgent investigation has been launched following the fatal stabbing of a man in South Hampstead.
Police were called at around 2345hrs on Thursday, 25 July, to Boundary Road, NW8.
Officers attended and found a 20-year-old man and a 22-year-old man suffering stab injuries.
Both men were taken by London Ambulance Service to a London hospital, where the 20-year-old man was pronounced dead at 0037hrs.
Officers believe they know his identity and are in the process of informing his next of kin.
A post-mortem examination and formal identification will be arranged in due course.
The 22-year-old man is not thought to have been critically injured.
There has been no arrest at this stage and an urgent investigation is underway.
Anyone with information is asked to call police on 101 quoting CAD 10016/july25,
To remain anonymous, call Crimestoppers on 0800 555 111.
Young people who have information about violence or knife crime can visit fearless.org where they can pass on information anonymously. Fearless is part of the Crimestoppers charity, and is also independent of the police.