Story highlights Group of teens on personal sled hit a large gate partway down the bobsled course, police say

The two who were killed were twin brothers

(CNN) Two brothers were killed after they and a group of friends apparently went down an Olympic bobsledding course on a personal sled on Saturday, authorities said.

Canada Olympic Park in Calgary, Alberta, site of the 1988 Winter Olympics, is currently used as a training facility for athletes and recreational facility for the public.

A group of at least eight teenage boys, Calgary police said, entered the premises after hours and attempted to go down the bobsled track.

"Part way down, the group hit a large gate used to separate the bobsled and luge tracks," police said in a statement.

Jordan and Evan Caldwell, who are twin brothers, died in the crash.

Jordan (left) and Evan Caldwell were killed after they went down an Olympic bobsled course in a personal sled.

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