The attack took place following a street fight in the town of Hallstahammar, 125 kilometres from Stockholm. The victim was stabbed in the chest shortly before midnight. He was taken to Västerås Hospital, where he later died.
Börje Strömberg, spokesman for Västerås Police, said at the time that the street fight, which involved several people, had calmed down when the stabbing took place.
"According to witnesses, a person returned following the row carrying a big knife. He attacked the man and then disappeared in a car from the scene," he said.
The murder caused outrage in the town, leading hundreds of inhabitants to participate in demonstrations against the rise in violent crime.