A 13-year-old boy seriously injured in an attack in east London has died.
Deividas Strizegauskas died after a fight, police believe
Deividas Strizegauskas was found with a severe head injury in Prince's Terrace, a few hundred yards from West Ham's ground, on Wednesday.
Police believe the boy, who lived in Plaistow but was originally from Lithuania, was injured during a fight between two large groups.
Five youths have been arrested. Police are treating the incident as a murder, but say it was not football-related.
Officers were called at about 1520 BST on Wednesday to reports a boy had been injured.
Working with schools
A Scotland Yard spokesman said the victim had been with a group of six to 10 youths who were thought to have been fighting with a larger gang.
A number of items from the scene are being forensically examined, but the spokesman said it was not known if a weapon had been used to attack the boy.
Although the incident took place close to West Ham's Upton Park ground, police said the assault was "not football-related in any way".
Det Ch Insp Jason Gwilliam said: "Officers are carrying out a forensic examination of the scene and we are working closely with schools in the immediate area to assist with enquires.
"We would urge anybody who has any information about this incident, or any further information, to contact the incident room."