The man was found in a wooded area by Bergsjön in the city on Sunday evening after the police were alerted to the scene, which Göteborgs-Posten was the first to report on.
The man was taken to hospital, where he was pronounced dead.
The circumstances surrounding the death are still unclear.
– Whether it is murder or not, we don’t know at the moment, now we have to investigate what has happened, says Johan Ljung, officer on duty at the police to TT.
The site was cordoned off for a technical investigation during Sunday evening. No one has been arrested in the case.