Police were in West Croydon on Thursday afternoon after reports suggested a possible stabbing, with what happened still unconfirmed.
Marked police vehicles were seen in the area during the response, and pictures show a person in protective clothing close to the vehicles.
There is no verified information yet about injuries or arrests, and the circumstances remain unclear. Enquiries were continuing as officers responded to the reports.
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Live updates are in the feed above and will be added as verified information is confirmed. Related coverage includes a Croydon murder conviction at Southwark, a Croydon college lockdown case and a Coulsdon assault investigation.
London Streets will update this story when official information is confirmed.
