The alarm to the police came at 22.15 and the injured person was taken by ambulance and taken to hospital.

A man in his 25s has been arrested and according to Morten Gunneng, duty officer in police region West, it was the now arrested man who called SOS.

- We do not currently know why the men were in the apartment and how the quarrel arose.

There are a number of stab wounds so the incident is classified as a suspected attempted murder, but we can not comment further on the victim's injury situation, he tells TT.