A prominent lawyer has called for "vigilance" against all forms of extremism in the wake of the attack in Finsbury Park.
In the early hours of Monday morning, an attacker drove a van into pedestrians near a mosque in north London.
One man died and a number were injured in the incident, and a man has been arrested in connection with the attack.
Nazir Afzal, a former chief prosecutor and Muslim himself, said vigilance was needed against all forms of extremism in an interview with Julia Hartley-Brewer.
He said: "We’ve got to be vigilant against all extremism and prioritise our risks.
"They still want to hurt and divide us. Members of the public have the responsibility to identify when they think someone is being radicalised.
"These people must do everything in their power to protect their children."