A 17-year-old boy is in a critical but stable condition in a south London hospital after being shot in the face.
Police have called for the public to help them with their investigation
Police were called to Gartons Way, Battersea, at 1800 GMT on Christmas Eve, after reports of a shooting.
Scotland Yard's gun crime unit is investigating the attack. Officers believe the victim was shot while he was inside a stationary vehicle.
Two suspects, both black males wearing hooded tops, were seen leaving the scene on foot.
Police officers, including armed officers, searched the area but made no arrests.
The scene is being forensically examined and the vehicle has been removed.
The police have urged anyone who saw anything suspicious in the area, or has information about the incident, to contact them.