A man was arrested on Saturday on suspicion of attempted murder in Karlshamn after a man in his twenties was taken to hospital with stab wounds on Friday evening.
Police said the arrest took place after a forensic examination was carried out at the scene.
The injured man was found on Friday and transported by ambulance to hospital. His condition remains unclear.
The incident occurred in Karlshamn and police have not released further details about any motive or the relationship between those involved.
