A knifeman has been Tasered in front of terrified train passengers in south east London.
The armed suspect boarded the train at Queens Road Peckham after running along railway lines during a police chase, Scotland Yard said.
Officers had been called to an address on Queens Road to reports that the man was having a "mental health crisis".
When they arrived at the scene, he had fled in his car. Police then began to chase the suspect, who got out of his car further along the road and ran along train tracks to the station.
He then boarded a train, armed with the weapon, where police found him and used a Taser to detain him.
Footage of the scene has emerged on Twitter, with one user describing it as "madness."
Contrary to social media speculation there are no reports of any injuries to members of the public or officers.
The incident is not being viewed as terror-related.
London Ambulance Service attended the scene and the man, believed to be in his mid-50s, was detained under the Mental Health Act.
Detective Superintendent Nicky Arrowsmith from the Central South Command Unit said: “This incident highlights the challenges that police officers confront on a daily basis.
"I am very proud of the courage and determination of all the officers involved, and pleased that their work helped ensure no member of the public suffered any harm.”
