The rescue service tells TT that something exploded on a bench by the gate to a stairwell. The facade by the gate has been damaged, according to the police.
There are no injuries and the material damage is fairly minor, says Andreas Aaw, on duty with the police.
As of 4:30 a.m., there was no suspect.
"Police are on site, knocking on doors and questioning people who may have seen and heard something. We have technicians at the crime scene to search for clues and secure them," says Aaw.
A preliminary investigation into destruction dangerous to the public and violations of the Act on Flammable and Explosive Goods has been initiated.
