-There has been some form of life and trouble at the site.
When we get there, we meet a person who has been hit by several stab wounds, says Peter Martin, officer on duty at the police, to TT.
The police were alerted just before 3 o'clock and when they arrived, there were around 20-30 people at the crime scene, according to Peter Martin.
The stabbed man was taken to hospital, but was awake and could be questioned.
According to Sydsvenskan, the knife cutting took place outside a party room with just over 200 people.
The police have had a large operation in the area during the night and have interrogated people at the party.
The police are investigating the knife cutting as an attempted murder.
No suspect has been arrested.