In Tønsberg, Norway, police responded to an alert regarding the use of firearms, which prompted a significant deployment of officers to the local train station. Multiple patrols initiated an investigation as they searched for potential victims and gathered witness testimonies. The local police operation leader, Eskil Hagen Olsen, reported that four individuals were taken into custody while they work to determine their involvement in the incident, and efforts are underway to locate a named suspect.

Initially, the train traffic was halted at 19:22 due to concerns that someone might have entered the train tunnel, which heightened the urgency of the police response. However, upon further investigation, officers indicated that although they had not found any firearms, there were reports of loud noises consistent with gunfire. By approximately 20:26, the situation had stabilized enough for train services to resume, though the investigation continued.

The police found footprints in the snow leading towards the tunnel, which indicated someone had entered the area despite police not finding any occupants in the tunnel itself. This incident raises concerns about public safety and the potential for misunderstandings during emergency situations, especially regarding the response to perceived threats involving firearms in community settings.