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.

Nepal will issue Everest permits only to climbers with experience of scaling at least one of the Himalayan nation's 7,000-metre (22,965 ft) peaks, according to the draft of a new law aimed at reducing overcrowding and improving safety.

It's unclear exactly what was removed from the home, however police sources have told Global News they were searching for electronics, such as computers, tablets and phones. On Sunday police also spent time at a separate home nearby.