A powerful explosion mangled the doors of a nightclub in Malmo, Sweden, on Thursday, but no casualties have so far been reported.
The city has recently been hit by a series of blasts.
A bomb squad and a team of technical specialists have been called to the Babel nightclub in central Malmo, police spokesman Magnus Lefèvre said, as cited by SVT.
So far it is unclear what type of explosive device was used, but efforts to determine it are under way.
Although the incident took place in the evening, no clubgoers are believed to have been injured in the blast, he said.
This is the 12th bomb in just 24 days.
A shooting attack was reported on Friday evening in the no-go zone of Rosengård in Malmö and another shooting attack in Uppsala.