A 17-year-old boy is in a serious condition in hospital after crashing a moped into a wall in south London causing a gas leak .
Police were called just after 6pm yesterday to reports of a man being badly injured after crashing into a building in Anerley Hill, Crystal Palace.
London Ambulance Service took him to hospital in south London where he remains.
A number of residents had to be evacuated after the crash as a precaution while the gas leak was dealt with.
The teenager has been arrested on suspicion of taking and driving away and dangerous driving.
Police, London Ambulance Service and London Fire Brigade attended the scene.