Police were called at approximately 9.05pm on Tuesday, 13 July to reports of a firearm discharge in Whitehorse Road, Croydon.
A property and a large area of Hampton Road has been cordon off by Police.
Two ARV vehicles with eight Armed officers have also been sent to the scene after the incident was declared a firearms incident.
A specialist search dog has been seen combing the area. An Audi A4 that is damaged has also been looked at by officers.
A spokesman for the Met Police said officers attended the scene.
There are no reports of any injuries at this time.
Enquiries into the circumstances are ongoing.