Police have named a teenage boy who died after a stabbing in Northampton.
17-year-old Louis-Ryan Menezes from Rothwell died of a stab wound to the chest after an attack at Drayton Walk in Kingsthorpe on Friday evening.
Three people arrested in connection with the incident have been released without charge.
A large-scale investigation is underway, led by the East Midlands Special Operations Unit (EMSOU) major crime team.
Police want to hear from anybody who was in the Drayton Walk area of Kingsthorpe between 6pm and 7pm on Friday, 25 May.
They also want help from anybody who was in or around the Eastern Avenue North or Newnham Road shops area at the times mentioned above, perhaps driving home from work, if they saw anything suspicious.
Anyone with CCTV footage or perhaps a dashboard camera is urged to come forward.
Dedicated officers are supporting the victim's family.
Witnesses are asked to call police on 101. Anybody wishing to remain anonymous can call Crimestoppers on 0800 555 111.