Mr Hansson also said police had arrested one person for drug offenses and that another had been detained under Police Act paragraph 13, which states a person can be detained for disturbing public order or constitutes an imminent danger.
Attacks on police in the coastal city comes as the Scandinavian country has been struggling to battle a car fire epidemic which has plagued the entire nation.
Hundreds of cars have been destroyed as police struggle to combat the increasing violence
During one weekend alone, 11 cars were burned out at the time police said they believed the serial fires were “revenge” for the crackdown on organised crime in the area.
The force’s increased lack of control in the country was revealed in a report by Sweden’s National Criminal Investigation Service in February, where attacks on officers were detailed, including police cars being stoned by masked groups.
It also detailed a rise in sex assaults, drug dealing and children carrying weapons.