A Canadian man who is accused of deliberately running over five members of a Muslim family with his truck, killing four of them, now faces terrorism charges in addition to counts of first-degree murder and attempted murder, prosecutors said on Monday.

Nathaniel Veltman, 20, was arrested shortly after the June 6 attack in a parking lot in London, Ontario, a short distance from the city's oldest mosque. He was wearing what appeared to be body armour and a helmet at the time, police said.