Two bombs have been detonated outside a police station in South-West Sweden.
No-one was injured in the explosion, which caused heavy damage to the police building in Kungsbacka, 295 miles south-west of Stockholm.
A police spokesman said no threats had been received before the explosion, which happened around 4 am on Thursday morning.
The explosive devices had been attached to the outer wall of the building. The area has been sealed off while forensic experts search for clues.