The province's Special Investigations Unit has been called in to review a two-car collision that has led to at least one death so far.

The collision occurred at Pharmacy and Lawrence Avenues shortly after midnight on Sunday. However, it may have started with an attempted break-and-enter at a nutrition store at Midland Avenue and Ellesmere Road, which led to a pursuit of the suspects by Toronto police.

A Dodge minivan that had reached speeds of up to 140 kilometres per hour slammed into a Honda automobile, but police had reportedly called off the pursuit moments before.

"I was on my balcony. I heard a big thump. I looked out and I could see the police grab a man and haul him out of that van," said Ronald Miller.

James Wilson said one police officer pulled a gun on one suspect.

"There has been multiple people taken to hospital, but they are very different injuries, ranging from critical to non-life-threatening and minor," Sgt. Tim Burrows of the Toronto Police Service's traffic unit told reporters at the scene early Monday.

A total of seven people were eventually taken to hospital, including all six in the Honda.

The crash left the intersection closed overnight as police investigated. One person, the driver of the minivan, was arrested at the scene. He is in hospital under police guard.

Late Monday evening, the Toronto Star reported that the driver of the Honda -- Mahboba (Sarah) Attayee, 26 -- died in Sunnybrook hospital. One of her passengers is in critical condition.

Because there was police involvement, the SIU had been brought in, Burrows said.

The SIU investigates cases where serious injury or death has resulted from contact with the police.  Its office was closed on Monday.

The Toronto Police referred all calls to the SIU. The SIU would like witnesses to call 416-622-1988.

With a report from CTV Toronto's Jim Junkin