Police had spoken to stabbed youth
An investigation has been launched after it emerged that a police force spoke to a teenager less than an hour before he was murdered.
Jeremie Malenge, 17, was stabbed to death in Hackney, east London at 11.40pm on Tuesday.
It is understood that the boy was questioned by officers because he matched the description of youths reported to be armed with knives in the area.
He was not arrested, but was attacked and killed less than an hour later.
An Independent Police Complaints Commission (IPCC) spokesman said: "We have begun an independent investigation into the Metropolitan Police Service's prior contact with Jeremie Malenge, who was fatally stabbed in Hackney on Tuesday night.
"The referral was made as it is understood in the hour before Jeremie was murdered he was spoken to by officers responding to reports of youths armed with knives in the area."
Jeremie was pronounced dead at the scene on Ponsford Street.
A post-mortem examination found the cause of death to be a stab wound to the chest.
Detective Chief Inspector Ken Hughes, who is leading the murder inquiry, said: "At this early stage in the investigation, I believe the victim was in a shop on nearby Homerton High Street. On leaving the shop, there appears to have been some sort of altercation with a group of three or four male youths.
"It would appear the victim was chased by the group to Ponsford Street, where he was stabbed. The suspects then ran off in an unknown direction.
"A number of witnesses have already come forward and are assisting with the investigation. This is a busy area and, even at this time of night, there would have been people about.
"Perhaps they saw or heard something which they thought insignificant at the time, but could be helpful to the investigation. I would urge them to contact the incident room."
Anyone with information is asked to call police on 020 8345 3865 or Crimestoppers on 0800 555 111.