One man was taken to hospital after reports of a fight.
Police and ambulance are alerted to Pildammsvägen due to a fight on an inner courtyard.
On the scene, two people are found who are believed to have been involved in the fight.
One of the individuals, a man in his 50s, is taken to the hospital by ambulance with stab or slash wounds. The other is arrested, suspected of having inflicted the injuries on the victim with some form of sharp object. The arrested person is a man in his 25s.
Police are clear on the scene. A report of severe assault is filed.