A 22-year-old man has been stabbed to death in south-west London after what police believe was a brawl between up to 10 people.
The victim was found in Cambridge Gardens in Kingston upon Thames, south-west London, by emergency crews after they were called at about 02:15 BST.
He was treated by paramedics at the scene but pronounced dead about 45 minutes later.
The Met said it had made no arrests in the murder inquiry.
The force said a “large crime scene” remains in place and a post-mortem examination is due to take place.
Det Ch Insp Mark Cranwell added: “It is believed that the victim may have been involved in an altercation involving up to 10 people prior to being assaulted.”
The victim’s next of kin have been informed.
Ch Supt Sally Benatar said: “Another young man has tragically lost his life to the violence of knife crime. Our thoughts are with his family and friends.
“Due to the nature of the investigation, a large area around the crime scene has had to be closed so that forensic examinations can be carried out.
“This will cause some short term disruption to residents but I know they will understand the reasons for this, and will provide every assistance to help the police support a family that is grieving.”