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A British man has been praised for tackling a suspected knifeman to the ground in central Amsterdam.

In the wake of the Southport attacks, much speculation swirled on social media about the knifeman and his background.

He met Joel, who had stepped back from the staircase after facing off with the knifeman.

Any motive or link between the knifeman and five victims are not yet known, though ORF reported extremism police had been drafted in to investigate.

Leanne Lucas was overseeing a Taylor Swift-themed dance and yoga class in the Merseyside town on 29 July when a knifeman entered and killed three girls.