Attacker kicked and slashed at his victim
The suspected tube station terrorist punched and kicked one of his victims unconscious before knifing him as he lay on the floor, another witness has claimed.
A 56-year-old man was left with "serious" stab wounds and another person was injured during the terror attack on Saturday night at Leytonstone tube station in east London.
Salim Patel (59) who runs the station shop and saw the attack unfold, said he heard shouts and saw the attacker beat up his victim before leaving him unconscious on the station floor.
Detectives are searching a residential address in east London after the "violent, unprovoked knife attack", which is being treated as a "terrorist incident".
Commander Richard Walton, who leads the Met's Counter Terrorism Command, said: "As a result of information received at the time from people who were at the scene and subsequent investigations carried out by the Counter Terrorism Command (SO15), I am treating this as a terrorist incident.
"I am aware that there were a number of members of the public in the underground station who filmed the suspect on their mobile phones during and after the attack and I would urge them to come forward and speak to us and share with us the filming that they carried out.
"I would continue to urge the public to remain calm, but alert and vigilant," added Commander Walton.