Two passenger trains collided head-on early Thursday morning on a local rail line in North Zealand, the northeastern region of Denmark, injuring at least 18 people and leaving five in critical condition. The crash occurred at around 6:30am local time between the towns of Hillerød and Kagerup, roughly 40 kilometres northwest of Copenhagen, on a line commonly used by commuters, workers, and schoolchildren.
A total of 37 people were on board the two trains at the time of the collision. Images released by Danish public broadcaster DR showed the yellow and grey trains facing each other in a wooded area, both with significant damage to their front ends, though they remained upright on the tracks. All passengers were evacuated, and those critically injured were airlifted to the National Hospital in Copenhagen. Emergency services, including fire and rescue teams, responded immediately.
Denmark's Accident Investigation Board arrived at the scene within hours. Klaus Jensen, head of the board's railway unit, said investigators are examining "all hypotheses", including a possible failure in the signalling system or human error. One expert suggested a train driver may have overridden a stop signal as the train left a local station. The Gribskov line, operated by rail company Lokaltog, is not believed to have been equipped with an automated safety system that could have prevented such a collision. Lokaltog's safety director, Claus Pedersson, described the crash as "one of the worst we can imagine in the railway industry" and confirmed that several members of staff were also among the injured. Early reports indicate one of the train drivers applied the brakes before helping to evacuate passengers.
Prime Minister Mette Frederiksen said she was "very concerned by the terrible train accident", while the local mayor, Trine Egetved of Gribskov municipality, described herself as deeply shaken and called for assurances that such an incident could never happen again. Rail accidents are rare in Denmark, making Thursday's collision a significant and alarming event. Investigators cautioned that it remains too early to determine the definitive cause, and their work is ongoing.