A driver deliberately plowed his white Ryder rental van into a lunch-hour crowd in Toronto on Monday, killing 10 people and injuring 15 along a roughly 1.6-km stretch of sidewalk thronged with pedestrians, police said, reported reuters.

Although the attack had the hallmarks of recent deadly vehicle assaults by Islamic State supporters in the United States and Europe, federal officials said it did not represent a larger threat to national security.

Toronto Police Chief Mark Saunders identified the suspect as Alek Minassian, 25, who he said had not previously been known to authorities. Police, who quickly arrested Minassian, do not know his motives.

“The actions definitely looked deliberate,” Saunders told a late-night news conference close to the site of the incident in the northern section of Canada’s biggest city, noting the van had been driven along sidewalks.

The brutal incident - which Prime Minister Justin Trudeau called a “tragic and senseless attack” - was one of the most violent in recent Canadian history.