A serious accident occurred at a newly opened roller coaster in Aarhus late on Friday.
A carriage derailed and crashed to the ground - before the eyes of shocked witnesses.
Four people were injured and taken to hospital.
The serious accident occurred in Frihedens tivoli in Aarhus in Denmark late on Friday evening.
The newly opened attraction Cobra is 400 meters long and 25 metres high. The wagons reach speeds of up to 70 km / h, and the passengers slungas around in all directions during the voyage.
But late on Friday was something terribly wrong. A wagon come loose and crashed to the ground, with the passengers on board.
Replaced bolts
The circumstances of the accident early on Saturday was not known, but several bolts were exchanged a few hours before the accident took place.
When a repair was exchanged several bolts out, and then tested rock and rollercoaster without people on board.
-- A few more wagons was torn off but was left on the rails, said amusement park manager Henrik Olesen shortly after the accident.
Two men and two women taken to hospital after the accident.
None of them is alleged to have life threatening injuries.
Shocked witnesses
Shocked eyewitnesses received crisis on the spot after the accident.
-- I am deeply shocked by what happened. The move our worst nightmares, "says Henrik Olesen.