The man died later and the police started a murder investigation.
According to testimonials a loud bang was heard when shooting from the area shortly after 9 pm and shortly thereafter the police and emergency services arrived at the place that had been closed.
It was still locked up in the neighborhood on Saturday, where the man was found injured when the technical investigation was under way. The area is part of the course in Årbyskogen.
The dead 41-year-old is known to the police and, among other things, convicted of violent crime, according to Aftonbladet.
The police are in contact on Friday evening with witnesses who were in Skiftinge. P4 Sörmland tried to talk to the police on Saturday, but did not contact the responsible investigator.