Trident officers are investigating a shooting in Waltham Forest.
Police were called by London Ambulance Service (LAS) to Lea Bridge Road at the junction with Bromley Road, E10 at 03:10hrs on Sunday, 7 August.
Armed police attended and found a 16-year-old male suffering from a gunshot wound.
He has been taken by ambulance to an east London hospital where he remains in a critical condition. Police are in the process of informing next-of-kin.
There has been no arrest at this early stage.
Anyone who saw anything suspicious, or has information that may assist the police investigation, should call Trident officers via 101. To remain anonymous, contact Crimestoppers on 0800 555 111.