Police had contact with the suspect a day before he got behind the wheel of an SUV and drove it into the crowd at a Filipino festival in Vancouver, killing 11 people, authorities said Monday.

A driver plowed a car into a crowd at a street festival celebrating Filipino heritage in Vancouver on Saturday night, killing at least 11 people and injuring dozens more in what police are calling “the darkest day” in the city’s history.

VANCOUVER, British Columbia — A 30-year-old man was charged with multiple counts of murder on allegations he killed 11 people when he rammed a crowd of people at a Filipino heritage festival in Vancouver, as hundreds attended vigils across the city for the victims and the Canadian prime minister visited the site on the eve of a federal election.