The Vancouver man accused of murdering eight people by ploughing a vehicle into a crowded street celebration on Saturday night had been grappling for months with the impact of his brother's murder.

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.

Former attorney general Wally Oppal says that even when an accused killer has documented mental health problems, they can still be convicted for their crimes. Kai-ji Adam Lo, accused of plowing his SUV into a crowd Saturday afternoon, killing 11 and injuring more than 30, had dozens of interactions with police related to his mental health issues.