A 17-year-old boy is in hospital after being stabbed by a group of men in a Tooting bookmakers.
It is understood the teenager was attacked by a group of men in William Hill, in Mitcham Road, at about 8.30pm.
A spokeswoman for the London Ambulance Service said they were called to Undine Street to reports of a stabbing.
She said: “We sent a single responder in a car, two ambulance crews and a duty officer. Staff treated one patient, reported to be 17.
“He was taken as a priority to hospital.”
His injuries are not thought to be life threatening and no arrests have been made.
A spokesman for William Hill said: "The incident involved a member of the public who ran into our shop. We are assisting police as much as possible and have provided them with cctv footage."
Officers from Wandsworth police are investigating.
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