A man is in critical condition after the attack in Central London, the Metropolitan Police say.
image copyright@arabgaucho
A suspected knifeman was detained by members of the public after a stabbing attack in central London.
Officers arrested the man in Oxford Circus, close to Regent Street, at about 20:00 BST.
Another man who was treated at the scene for stab wounds was taken to hospital where he remains in a critical condition, Scotland Yard said.
The arrested man is being treated for a non-life threatening head injury, the force said.
A crime scene is in place and officers remain in the area, it added.
A London Ambulance Service spokesperson said: “We treated a man at the scene for stab wounds and took him by road to a major trauma centre.”
The BBC is not responsible for the content of external sites.