I can confirm that the man is dead and that technicians are working at full capacity at the scene, more than that I cannot say at the moment, said the police's press spokesperson Evelina Olsson at 18:00.
At 21:00, the police announced that four people have been arrested, suspected of murder, gross extortion and assault.
It was just before 16:00 on Saturday that the police were alerted to the apartment where the man was found with stab or cutting wounds.
The man was taken to hospital where the police set up a special access ban "to maintain order and safety at the scene".
It is a tool that we have when patrols notice tendencies that it may become rowdy and violent at the scene. Here we had a number of people and upset feelings and made the preventive decision to cordon off, said Evelina Olsson.
At 17:40, the police announced that the man has died.
The actual apartment and stairwell have been cordoned off for technical examination.