A 15-year-old has been arrested after a series of new explosions rocked the Malmö suburb of Rosengård on Christmas Eve.
The attacks were again directed against the premises of a property company.
Police were called to the scene at 6.12pm on Wednesday. No one is reported to have been injured in the attack.
"A window has been completely destroyed. The frame is just hanging off. Parts of it are ten to fifteen metres away," said freelance photographer Karsten Petersen.
Police technicians have investigated the premises.
"We have cordoned off the site and are trying to talk to people who may have seen something," said Ewa-Gun Westford, information officer at Skåne police.
During the evening a 15-year-old was arrested on suspicion of serious public endangerment, according to a report in the local Sydsvenskan daily. The teenager was interrogated during the night.
The blast on Christmas Eve was the fourth in the area recently. Over the weekend there were two explosions at the company's premises and also further blast targeted a car parked a few hundred meters away.
Police are working on as theory that the blasts are due to a dispute between some tenants and the property owner.
"We can't get focus entirely on this, but we think there are some individuals who are dissatisfied with some societal function and then they fight back in this way," said Ewa-Gun Westford.