On Thursday evening, both the Gardermoen Line and the Main Line were shut down for traffic between Lillestrøm and Kløfta, leading to extensive traffic problems for travelers heading to Oslo Airport. The closure started around 20:00 local time due to an incident involving a person being struck near the tracks, which was confirmed by the police later in the evening. Traffic was halted and would take time to resume, as stated by Bane Nor at the time.

The situation rapidly escalated, with reports of very long taxi queues forming at Norway's main airport, as numerous passengers were left stranded due to the disruptions. At 20:20, the police confirmed that there had been a fatality as a result of the incident on the tracks, which further complicated the efforts to restore normal service in the area. As a precautionary measure, power was intentionally cut off from trains, including one that was stranded between Eidsvoll and Kongsvinger, until the investigation was completed.

Authorities, including Bane Nor, have emphasized that the safety of both passengers and railway staff is paramount during such incidents, and they were working closely with the police to conduct a thorough investigation. Traffic was eventually reopened around 22:30, but the extent of the delays and the impact on travelers highlighted the vulnerabilities in the regional transport system and the need for effective crisis management protocols.