Update: According to Toronto police, the van driver has been arrested, however so far there are no details on age, gender or motive.

As reported earlier, 8 to 10 people were hit, police said, though Toronto paramedics put the injured number at closer to five.

A witness said separately that he had seen at least four bodies lying covered on the ground, suggesting at least several fatalities.

The van, which may have mounted the curb and hit the pedestrians on the sidewalk, was stopped by police, Const. Jenifferjit Sidhu told CBC Toronto. Sidhu added that the police still does not know the cause or reason for the collision.

Meanwhile, as CTVNews reports, witness Alex Shaker, who was driving southbound at the time, says the van was travelling at high speed on the sidewalk.

“He started going down on the sidewalk and crumbling down people one by one,” Shaker told CTV News Channel on Monday afternoon.

Shaker said he saw the vehicle strike someone with a stroller.

“He just destroyed so many people’s lives,” he said. “Every single thing that got in his way.”

The extent of injuries is unknown and ambulances are on the scene. Photos posted online show multiple individuals on the ground.

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Witness Phil Zullo, who was driving northbound, says he first noticed the commotion when he saw police taking down a male suspect. Zullo says he continued north, where he saw “shoes and hats flown everywhere.”

Video shared with CTV News shows the suspect pointing a small, dark object at police, with his back to the van. Police can be seen taking cover behind their vehicle and shouting at him to get down.

“Get down!” the officer is heard shouting. “I have a gun in my pocket,” the suspect can be heard saying.

“Get down or you’ll be shot!” the officer says.

The camera turns away from the confrontation for approximately eight seconds, then looks back to show the suspect on the ground, face-down, with the officer cuffing him.

Another video recorded from a nearby building shows the moment missed in the previous video. The suspect can be seen walking out in the street with the object in his hand still pointed at the officer. After approximately five seconds he drops the weapon, throws out his arms and backs up to the curb.

The van suspected in the collision was found on Poyntz Avenue off of Yonge, just south of Sheppard Avenue West.

The van is marked as belonging to the rental company Ryder, which suggests a London-copycat terrorist attack; recall the van used in the March 2017 deadly attack on London Bridge was also a rental.

Prime Minister Justin Trudeau briefly addressed the situation before a session in the House of Commons Monday afternoon.

“Our hearts go out to anyone affected,” Trudeau said. “We’re obviously going to have more to learn and more to say in the coming hours.”

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Toronto police say a white van has struck several pedestrians in the Yonge Street and Finch Avenue area. Police said eight to ten people were hit.

The van may have mounted the curb and hit the pedestrians on the sidewalk, police added according to CBC.

Police were called to the area shortly before 1:30 p.m. on Monday.

An unconfirmed video from the scene of the accident shows a number of people being treated on site.

As NBC reporter Tom Winter notes, there is no word yet on whether this was an intentional or accidental act.

Emergency crews are asking members of the public to avoid the area.

There is no subway service between Sheppard and Finch stations on Line 1 due to the police investigation.