Three people were involved in the accident and the other two are being treated for serious injuries, one of whom was taken to hospital by ambulance helicopter.
- There are two cars that have collided head-on.
Relatives have been notified, says Johan Wernström, officer at the police's regional command center.
The alarm came just before 7 pm on Sunday evening and Södermanlands Nyheter reports that the road was completely closed during the rescue work.
The police investigate the accident as causing another person's death and causing bodily injury.