A 13-year-old boy suspected of stabbing two boys at a secondary school is a former pupil and the attack has not been declared a terrorist incident, police said.
The teenage suspect was arrested after being seen at a mosque hours after the stabbings.
Two pupils at Kingsbury High School, in Brent, north-west London, were left seriously injured after being stabbed at lunchtime on Tuesday.
Detective Chief Superintendent Helen Flanagan from Counter-Terrorism Policing London said the suspect, a former pupil and British national, arrived at the school at around 12.30pm on Tuesday.
He went up to a first floor classroom and sprayed a substance towards a pupil, who was not injured and the liquid is not thought to have been noxious.
The suspect then stabbed a 13-year-old boy in the classroom, before he running along a hallway and down a flight of stairs. The suspect then stabbed a 12-year-old boy on the ground floor, before fleeing the school.
Later a member of the public called the police with concerns about the conduct of a boy at a mosque in north west London.
Ms Flanagan told reporters: “At this point we do not believe the suspect to have any particular connection to that mosque, and at this stage, we think that it may have been coincidental that he ended up in that area, and all of those at the mosque have been incredibly supportive of this investigation.
“At this time, the incident has not been declared a terrorist incident.”
