Police said they did not know what had caused the crash.
Shocked family members were taken to hospital where they were offered psychological assistance.
Two young men died on Monday afternoon after the car in which they were travelling crashed into a tree on a gravel road between the central Swedish towns of Eskilstuna and Strängnäs.
Police said they did not know what had caused the crash.
Shocked family members were taken to hospital where they were offered psychological assistance.