Twin brothers were killed using own Sledge on Olympic Track

                                    Victims Jordan and Evans Caldwell

Twin brothers were killed and six other teenage boys injured when they raced down an Olympic bobsleigh track on their own sledge and hit a gate.

The group is believed to have entered the park in Calgary, Canada, at around 1am, and police are now investigating how they got in.

The family of the dead boys, Jordan and Evan Caldwell, 17, described them as "bright lights" who "leave a huge void".

They added: "We were reminded today that life is but a vapour. Life is precious, life is fragile, and we must redeem the time we're given.

"Our boys Jordan and Evan were bright lights to all who knew them. We are grieving their loss but confident in their new home of heaven.

"Our brief 17 years with them were a gift: filled with much love, laughter, and fond memories. They leave a huge void and will be sorely missed."

Police said emergency crews received a call from an employee at the WinSport Canada facility in northwest Calgary at 1.30am.

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

Staff Sergeant Paul Wyatt said: "It's believed at least eight teenagers, all males, entered the property after hours and used a personal sled or toboggan in an attempt to go down the bobsled track."

Jordan and Evan Caldwell died at the scene.

Three teenagers were taken to Foothills Hospital - one in a critical condition, and two in a stable condition.

The other three youngsters were taken to Rockyview General Hospital with minor injuries.

WinSport Canada owns and operates Canada Olympic Park, which hosted events during the 1988 Winter Olympics.

Several other World Cup events are held at the site.