About ten people must have been involved in the quarrel.

The perpetrator is suspected to be a man with whom the woman has or has had a relationship.

- When the police arrive at the scene, they find the woman who is seriously injured by some form of stabbing weapon, possibly a knife, police spokesman Hans-Jörgen Ostler tells TT.

The police arrived at the scene, in the district of Fredriksberg, at 20.45.

The suspected perpetrator had then left.

He was arrested shortly afterwards with another man and was then armed with a knife.

In connection with the arrest, one of the policemen fired a warning shot.

The woman was taken to hospital but died later in the evening, the police announce on their website.

Relatives have been notified.

The man arrested in the company of the suspected perpetrator has been released and is not suspected of a crime.