The incident happened in Hither Green Lane near Benin Street at around 3.25pm today (October 28).
Officers and London Ambulance Service crews attended and found a person who had been stabbed.
They were taken to hospital for treatment where their condition is unknown at this stage.
A spokesperson for London Ambulance Service said: “We were called at 3.25pm today (28 October) to reports of a stabbing at the junction of Benin Street and Hither Green Lane, Hither Green.
“We sent resources to the scene, including an ambulance crew, paramedics in fast response cars and an incident response officer.
“Our first paramedic arrived on scene in five minutes.
“We treated a patient for a stab wound and took them to hospital as a priority.”
This is a breaking news story. More to follow.

