Armed police rushed to a residential street after reports of gun shots being fired in Thornton Heath.
Specialist gang crime officers with the Met Police attended Hythe Road at around 2.15am on Sunday, April 1, after reports of shots being fired.
As police investigated a section of the road close to Grangewood Park was cordoned off for most of the day.
There have been no arrests and no one was injured.
Officers with the Met Police’s gang-specialist Trident unit are investigating the incident.