"We are working in an environment where there's serious crime, and we are having success fighting it. That makes the people we are working against irritated" said Patric Heimbrandt, local police chief in the area, at a press conference on Wendesday morning.
The explosion that went off shortly after midnight caused a loud bang that woke many people up. All windows in the police station have been broken and the building opposite has also sustained damages. It just just luck that no-one was injured, said Heimbrandt.
In a comment to the news agency TT, prime minister Stefan Löfven said that people must never accept violence against police.
"The attack last night shows that we must continue and intensify the fight against serious crime. With tougher laws, better tools and more resources to the police, we will fight the violence and reassure people," Löfven said.