A number of buildings and structures including the Mayor’s office were hit by a blast wave, which knocked out glass and caused various degrees of damage, the TT agency reports.
Explosion engineers carefully examined the scene, however are still unsure as to what type of explosives had been used.
“There is a lot of intensive work going on right now, particularly that of processing witness testimonies, which were taken the previous night,” said Patric Fors, spokeswoman for the Police Department of the Southern Region.
According to one eyewitness, the explosion was so strong that the floor shook in her house. Fortunately, no one was hurt.
According to the Helsingborgs Dagblad newspaper, seven violent explosions have occurred in Landskrona since December 2018. But, as local police chief Patrik Heimbrand assured at a press conference on Thursday, the situation in the city "is not dangerous to the public."