It was at nine o'clock on Wednesday night that the alarm went off after a noise on a local bus in Kiruna.

A 21-year-old man was found stabbed and killed and the case is classified as murder, or manslaughter.

Requested detention

Three people, a man and two juvenile minors, who are under 18, were arrested as suspects on probable cause for murder.

- I will request these people detained today. The last of them will be questioned in the morning and after that I probably know more, says chamber prosecutor Lindha Strömberg.

Can you confirm the information that it is a father and his two sons?

- Yes, I can confirm that. It is a father and his two sons, she says.

Is the 21-year-old victim related to the three people?

- No, he is not as far as I know, but we want to wait to say something about the motif, says Lindha Strömberg.