A 14-year-old girl died Thursday at a popular amusement park in northern Denmark, police said, when the back of a roller coaster ride derailed. According to police, a 13-year-old boy was injured in an arm. Henrik Ragborg Olsen, manager of the Tivoli Friheden amusement park in Aarhus, Denmark’s second largest city, told local newspaper Aarhus Stiftstidende that “the two back seats” of the Cobraen roller coaster were hanging “under the carriage train”. Police said they received a call at 12:50 p.m. that a car was stuck on a ride at Tivoli Friheden and several people were stuck. Two people were sitting in the back seats and were driven away by emergency workers, the newspaper said. Ragborg Olsen told Ekstra Bladet newspaper that the two were seriously injured and taken to hospital. The accident happened on the Cobraen roller coaster and the park has been closed, police said. An investigation has been launched into what caused the accident with police interviewing witnesses. The roller coaster is 25 meters (82 feet) high and the carriages have a top speed of 70 kilometers per hour (44 mph), according to the Tivoli Friheden website. The amusement park is located in the southern part of Aarhus, 156 kilometers (97 mi) northwest of Copenhagen.