Detectives are hunting a man who fired gunshots at a white van in Hackbridge before fleeing on a motorcycle.
Police were called to Seymour Road at 12.42pm yesterday after the gunman fired shots at the van.
The van was empty and no one was hurt in the incident.
The gun man was seen fleeing the area on a motorbike before police arrived.
Contact police on 101 or the charity Crimestoppers on 0800 555 111.
Did you see or hear anything? If so, contact reporter Mike Murphy-Pyle on 0208 722 6359 or email email@example.com.
- Police given more time to question south London teenagers arrested on suspicion of terror offences
- TUBE STRIKE: Twitter reacts
- POLL: More than half of Londoners admit to dipping their wick in the office goods. Have you?
- Sutton United reserve goalkeeper resigns over betting scandal
- Updated: Sutton United goalkeeper Wayne Shaw to be investigated by Gambling Commission over 'pie-eating stunt'