Motive elusive after van driver kills 10 on Toronto sidewalk

Police inspect a van suspected of being involved in a collision.
Police inspect a van suspected of being involved in a collision killing 10 and injuring 15 people at Yonge St. and Finch Ave. on April 23, 2018 in Toronto, Canada. A suspect is in custody after a white van collided with multiple pedestrians.
Cole Burston | Getty Images