A stabbing at a Tube station in east London is being treated as a “terrorist incident”, the Met Police has said, the BBC reports.

Police were called to reports of people being attacked at Leytonstone around 19:00 GMT on Saturday. The knifeman reportedly shouted “this is for Syria”.

A man was arrested after being Tasered by police. One man suffered serious knife injuries while two others received minor injuries.

Metropolitan Police counter-terrorism detectives are investigating the case.

Downing Street said it was monitoring the situation closely.

The Met said the suspect was reportedly threatening other people with a knife.