In the early hours of Sunday morning, a serious traffic accident occurred on Røykenveien in Heggedal, Asker, leaving one person critically injured.

The incident involved a single vehicle with four occupants, which veered off the road and collided with a pole.

Emergency services, including an air ambulance, were promptly dispatched to the scene.

According to Oslo police operations leader Sven Christian Lie, all four individuals sustained injuries, with one in critical condition.

Three of the injured were transported to a local medical facility, while the fourth received treatment on-site.

The accident has led to the closure of Røykenveien at the crash site, with police indicating that the road will remain closed for several hours.

Authorities continue to investigate the circumstances surrounding the accident.