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.

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.

Vancouver police ruled out terrorism in a car ramming attack that killed 11 people at a Filipino heritage festival in the Canadian city.