- It was a caller who sounded the alarm that there was an injured man in a stairwell, says Evelina Olsson, spokesperson for the police.

Both police and an ambulance were sent to the scene and the stairwell was blocked off.

The man, who is in his 25s, died of his injuries and the relatives have been notified.

A preliminary investigation into the murder has been initiated, the police state.

- We do not want to go into how the man got his injuries, says Evelina Olsson.

Police patrols have carried out door knocking in the area and questioned witnesses.

- We are still on site during the evening and are waiting for technicians, says Evelina Olsson.

At present, no one is in custody in the case.