'A powerful explosion' ripped through the centre of Stockholm this afternoon.
The blast occurred at 11:40am in the area around Brännkyrkagatan on Södermalm, according to witnesses.
The street was blocked off and emergency services attended the scene.
Police have speculated the blast may have been a gas explosion.
Police also confirmed to the media that there were several patrols at the scene.
"We are there to investigate what happened, but at present it is unclear," police spokesman Albin Birch bark Berg said.
Several windows were reportedly smashed by the blast.