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

A 30-year-old man was arrested at the scene of the Lapu Lapu Day festival after the Saturday night attack, authorities said.