The condition was initially described as life-threatening.
The man was found injured outdoors and was taken to hospital for care. According to the police, the man was injured by a sharp object.
It was two passers-by who alerted the police after seeing an injured person. A man was arrested in connection with the scene, says the police's press spokesperson Patric Fors to TT.
The man is in his 35s and is now detained, suspected of attempted murder.
The injured man has not yet been able to be heard by the police.
We have been knocking on doors in the area and that work will continue during the day. We will also conduct a technical investigation, says Fors.