Detectives are continuing appeal for witnesses and information following the fatal shooting of a 16-year-old boy in Walthamstow.
Police were called at approximately 22:00hrs on Monday, 2 April to Markhouse Road, E17 to reports of shots fired.
Officers and the London Ambulance Service attended and two teenage boys, aged 16 and 15, were found injured.
They were both taken to an east London hospital. The 15-year-old boy was treated for non-life threatening injuries.
The 16-year-old boy suffered a gunshot injury. He died in hospital at 17:45hrs on Tuesday, 3 April. His next of kin were at the hospital when he passed away.
He has been named as Amaan Shakoor from Leyton.
A post-mortem examination will be held in due course.
The victim's family are being supported by specialist officers. They have requested that their privacy is respected as they come to terms with the death of their loved one.
The investigation is being led by Detective Chief Inspector Gary Holmes of the Met's Homicide and Major Crime Command.
DCI Gary Holmes said: "This is a tragic murder of a young man which has shocked the local community and the rest of London, and our thoughts are with the victim's family at this incredibly difficult time.
"Serious violence on London's streets cannot be abided, and I would like to assure the local community that my officers and those on the Borough are working very hard to piece together what happened and identify those responsible for this violent incident which resulted in a teenager tragically being killed, and another seriously injured.
"There are a number of leads that we are following up on and we are aware of speculation regarding the circumstance of this murder. At this very early stage, I am keeping an open mind and I would urge anyone who witnessed this attack, or has any information about the murder to come forward and contact us via the incident room."
Anyone with information is asked to contact the incident room on 020 8345 1570 or via 101 quoting reference 6727/02 April or Crimestoppers anonymously on 0800 555 111. You can also tweet information to @MetCC