A 13-year-old boy was killed and four other people were wounded after a stabbing in London on Tuesday involving a man with a sword.
Police said they did not believe the incident was terrorism-related.
Police tasered and arrested a 36-year-old man after the incident near Hainault in east London. Video footage showed a man dressed in yellow wielding what appeared to be a sword.
Two police officers also wounded
"It is with great sadness that I confirm one of those wounded, a 13-year-old boy, has died. He was taken to hospital after being stabbed and sadly died shortly afterwards," London's Metropolitan Police Chief Superintendent Stuart Bell said.
Two members of the public and two police officers were in the hospital with non-life-threatening wounds. The two police officers had stab wounds requiring surgery, Bell added.
"We do not believe there is any ongoing threat to the wider community, we are not looking for more suspects and this incident does not appear to be terror-related," he said.