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About mid-way down, they crashed into a large gate used to separate the bobsled and luge tracks, Wyatt said.

When emergency workers arrived, they found eight people, all males in their late teens suffering from various injuries.

Jordan and Evan Caldwell died at the scene. Wyatt said they were likely killed on impact at the gate.

Mike Drew/Calgary Sun

Three teens were taken to Foothills Hospital – one in critical condition, but later stabilized, and two in stable condition – with various soft-tissue injuries, said EMS spokesman Adam Loria.

The remaining three teens were taken to Rockyview General Hospital with minor injuries, Loria added.

In total, seven ambulances responded to the scene.

Loria said EMS initially thought they were dealing with one patient but learned there were multiple people involved.

He said emergency workers were challenged by low lighting and slippery sections of the facility, but were overall prepared to handle the “difficult situation.”

The traffic collision reconstruction unit is aiding with the investigation.

Police had originally said they were looking for two teen witnesses who may have been part of the group, but later clarified they are not looking for any additional people.

Wyatt said police found two vehicles at the scene believed to be connected to the group, which have been towed for examination.

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He said investigators are still trying to determine how and where the group got onto the property and are reviewing CCTV footage for clues. He said he’s unaware if there were security guards at the site at the time.

He added officers are also conducting neighbourhood inquiries to see if any of the homes in the area have security cameras that might have captured some activity overnight.

Wyatt said he hadn’t heard of any similar incident taking place in the past.

It’s not known how fast the teens were going. But according to WinSport’s website advertising their winter bobsleigh program for members of the public, people can go down the Olympic track with a professional pilot in 60 seconds at speeds of up to 100 km/h while reaching up to 4 G forces.