The police were alerted to an apartment building in Södertälje after a woman in her 60s fell from a great height. Life-saving measures were taken, but the woman died, the police write on their website.
The circumstances surrounding how the woman fell are unclear. The police are therefore initiating a preliminary investigation into murder to investigate whether a crime has been committed.
A man has been arrested and detained. The man is in his 60s and has a close relationship with the woman, according to the police.
Relatives have been informed.