A man stabbed three people at an east London Tube station Saturday before police subdued him with a stun gun and made an arrest, London's Metropolitan Police said.<br /><br />Police said they were treating the stabbing at Leytonstone station as a terrorist incident.<br /><br />One man sustained serious injuries not considered to be life-threatening, police said. Two others suffered minor injuries.<br /><br />The suspect was taken to a London police station.<br /><br />Police said they were called just after 7 p.m. to reports of a number of people stabbed at the station and a man threatening others with a knife.<br /><br />Commander Richard Walton, who leads the Met's Counter Terrorism Command, said: "We are treating this as a terrorist incident."<br /><br />"I would urge the public to remain calm, but alert and vigilant. The threat from terrorism remains at severe, which means that a terrorist attack is highly likely."<br />TAGS-<br />3 stabbed at London Tube station in terror attack, police say - CNN.com<br />3 stabbed at London Tube station in terror attack, police say - CNN.com<br />Leytonstone Tube station stabbing a 'terrorist incident' - BBC News<br />Leytonstone stabbing suspect screams 'this is for Syria' as he slashes at man in video<br />More news for 3 stabbed at London Tube station in terror attack, police say<br />Leytonstone Tube station stabbing a 'terrorist incident' - BBC ...<br />Three people stabbed at London tube station in terror attack ...<br />3 stabbed at London tube station in terror attack, police say ...<br />Police investigate London tube stabbing as terrorist incident ...<br />3 stabbed at London tube station in terror attack, police say ...<br />'Terrorist' stabbing attack at Leytonstone tube station in ...<br />Three stabbed at London tube station in terror attack, police ...<br />3 stabbed at London tube station in terror attack, police say ...<br />Leytonstone stabbing suspect screams 'this is for Syria' as ...<br />Man wielding machete stabs one in London tube station, says
