Shortly after 02:00, the police were called to Bältespännarparken. A caller had seen a man being attacked by several people.
When the police arrived at the scene, they found an injured person who stated that he had been beaten and kicked. According to the police, it appears to be an unprovoked attack.
The man, who is in his 40s, received, among other things, a jacket in the chin and was taken to hospital.
The police have searched central Gothenburg in search of suspected perpetrators, but have not succeeded in arresting anyone.
A report of assault has been written.