An SUV driver struck and killed a pedestrian who was travelling diagonally across a Toronto intersection Monday morning, police said.

Police say they don't know why the victim, a 39-year-old male, was crossing from the southwest corner of Yonge Street and Steeles Avenue to the northeast corner.

The pedestrian was struck by an SUV travelling west on Steeles through a green light at about 3 a.m. said Toronto police traffic Sgt. Tim Burrows

Burrows said the police force called in two accident reconstruction teams to investigate the scene due to the large size of the intersection, located in north Toronto. He said no charges have been laid.

However, police are still looking for witnesses to the accident, including the drivers of two vehicles that were stopped at red lights on Yonge Street.

"We're wondering about why the driver didn't see the pedestrian and why the pedestrian decided to cross the street in such a bizarre manner," Burrows told CTV.ca on Monday.