A girl and two boys have been arrested on suspicion of murdering a teenager who was stabbed to death in south London.
Police were called to reports of a stabbing in Glycena Road, Battersea, in the early hours of Saturday.
A 17-year-old boy was found with serious wounds and died at the scene. He has been named by police as Jamal Coombes.
A 15-year-old girl and two boys - aged 14 and 15 - have been arrested on suspicion of murder and remain in custody.
Detective chief inspector Brian Howie said: "Our thoughts remain firmly with Jamal's loved ones following his tragic death.
"I understand the impact this incident has had on the local community. If you have any questions or concerns, do not hesitate to speak with one of our officers on patrol in the area this week.
"As our enquiries continue, I am appealing directly to the public. We believe that there was an altercation prior to the assault, so if you were in the Lavender Hill area between 03:30 hrs and 05:00hrs, specifically Glycena Road, Acanthus Road or Pountney Road, and witnessed a group of men running, please come forward.
"Any information, no matter how minor it may seem, could prove crucial. CCTV, doorbell or mobile phone footage may provide vital evidence.
"I would also urge members of the public not to assume that information has already been shared, any detail could be of significant importance to the investigation."
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