A serious traffic accident occurred on national road 4 in Lunner, Akershus, when two cars collided in the Gruatunnel. Emergency services arrived at the scene at approximately 7:30 PM to find one individual trapped inside a vehicle. This person was later described as critically injured and was airlifted to a hospital by helicopter, according to the police's reports.

The second occupant involved in the incident was transported by ambulance to Gjøvik hospital, although their injuries remain unknown at this time. The police responded promptly to the accident, which has caused the road to be closed for ongoing investigations and to ensure the safety of those involved and emergency responders.

This incident highlights the dangers of road safety and the importance of adhering to traffic regulations, especially in busy transportation areas like national roads. With both vehicles involved being damaged, local authorities may review traffic conditions at the site to prevent future accidents and ensure the safety of motorists traveling along this route.