- Something has hit the fifth floor, says Thomas Sjöberg, commanding officer at Greater Stockholm's rescue service.

What it is that exploded is unclear, but it must have been inside the stairwell.

- It is a charge that has detonated in a stairwell inside a high-rise building in Årsta, says Ola Österling, press spokesperson at the Stockholm Police.

There are no reports of anyone being injured, according to police.

It is a big effort with police and emergency services on site.

the text is updated