A man in his twenties was stabbed in the back in an attack on Monday evening.
Police and ambulance were called to Franklin Way, Croydon, at 5.10pm.
The victim was taken to a South London hospital with a puncture wound to his back, but was later discharged.
Enquiries are on-going, but no arrests have been made.
Anyone with information is asked to contact Croydon CID on 020 8649 0258. Alternatively to remain anonymous, call Crimestoppers on 0800 555 111.
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