Four teenagers have been detained on suspicion of kidnapping in Karlskrona, according to the police region South's press department.
They are suspected of having abducted a 15-year-old boy at around 21:00 on Saturday, writes Blekinge Läns Tidning.
The boy was later found by the police in the evening outside Karlskrona.
He was walking. He had some injuries, says Bo Olsson, duty investigation officer at the police in Karlskrona to the newspaper.
He has received care at the hospital. The four detained are teenage boys in their late teens.