Police have launched a murder inquiry after a teenager was stabbed to death.
The 19-year-old suffered fatal wounds on High Road, Ilford, Essex, at about 2.30am after an altercation with a group of men.
A second victim, aged 17, also suffered stab wounds and was taken to an east London hospital, but his injuries are not thought to be life-threatening.
Police said they believe they know the identity of the dead teenager, and are in the process of informing next of kin.
Detective Chief Inspector John MacDonald from Scotland Yard's homicide and serious crime command said: "I am appealing for anyone who may have been in the Ilford High Road or Clements Road area to come forward and contact police.
"As the incident unfolded, we understand a group of people gathered in the Clements Road area who I believe would have witnessed the incident.
"In particular, I am keen to speak to a young female in that group who may have had some interaction with the suspects prior to the attack."
Two men, both aged in their 20s, were arrested nearby and are being questioned by police.
The 19-year-old is the 28th teenager to meet a violent death in the Greater London area this year.
The stabbing comes more than a month after the last murder of a teenager in the capital - that of Craig Marshall, who was killed outside a block of flats in Acton, west London, on September 29.
