The altercation happened at 9.30pm on Wednesday in the Hässleholmen area of the town, where around 15 people were involved in a fight and several stabbings occurred.
“It was a brawl with stabbings. When we arrived at the scene there were between 10 to 15 young people there who then disappeared,” Christer Fuxborg, press spokesperson for Sweden's police in the west region, told tabloid Aftonbladet.
Police would not comment on whether the conflict was gang-related.
One person managed to get to the hospital on their own, while others were taken by the police along with ambulance staff.
Three young men between the age of 18 and 22 were stabbed, with one of the men later dying from his injuries. Police have now opened an investigation into murder, as well as two attempted murders.
Several people have been questioned but they are not suspects and no arrests have been made.
Police have not been able to speak to the two injured men yet, but have received information from the general public.