Police are investigating the death of a teenage girl who was found in the stairwell of an apartment building. The case is being treated as a criminal investigation, but authorities have not released further details about the circumstances.

An 18-year-old male suspect is currently in remand custody, according to the information confirmed so far. Yle News reported the case on Tuesday, but it remains unclear what led to the girl's death and what role, if any, the suspect is alleged to have had.