Two trains have collided between Hilleroed and Kagerup, north of Copenhagen, Denmark, April 23, 2026. (Photo: VCG)

A total of 18 people were injured, including five in critical condition, after two local trains collided head-on in Denmark on Thursday morning.

The number of people believed to have been on board the two trains was revised to 37 from an earlier estimate of 38, according to updated information from Danish broadcaster DR.

Acting Danish Prime Minister Mette Frederiksen said in a written response to Danish media TV 2 that her thoughts were with the injured, their families and all those affected.

Police said road closures remained in place around the accident site, with some restrictions expected to last until late Friday morning. Train services on the route were still suspended, and it remained unclear when operations would resume.

The collision occurred on the Gribskov Line between Hillerod and Kagerup, about 50 km north of Copenhagen. Police said they received the report at 6:29 a.m. local time (0429 GMT) and dispatched emergency response teams to the scene.

Morten Pedersen, police inspector with North Zealand Police, described the crash as a "very serious accident." He said authorities were carrying out extensive investigations to determine the cause of the collision.

Police said later on Thursday that a crisis center and hotline set up in Hillerod for those affected had been closed after everyone had left, though relatives and passengers could still contact police for further information.