The incident happened in Belvedere Road at around 1.30pm yesterday (January 9).
Officers, London Ambulance Service crews, and an air ambulance attended and found a man in his 30s injured.
He was taken to hospital for treatment where his injuries were assessed as not life-threatening.
No arrests have been made following the incident.
A spokesperson for Metropolitan Police confirmed today (January 10) that its original statement remains accurate.
The full statement from Metropolitan Police says: “Police were called at around 13.30hrs to Belvedere Road, Croydon to reports of a stabbing.
“Officers attended and discovered a man in his 30s with stab wounds.
“He was taken to hospital where his condition was assessed as not life-threatening.
“An investigation has been launched by detectives from South Area Command.
“Anyone with information is asked to call 101 quoting CAD 3185/9Jan.”