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.

Thousands of Filipinos in Vancouver were celebrating Lapu-Lapu Day on Saturday, marking a defining moment in Philippine history, when tragedy struck - a vehicle drove into the crowd killing multiple people and injuring others.

On Sunday, police announced that 11 people died in the incident when an SUV drove into a crowd of people on Saturday, just after 8 p.m.