Since before, ten people have been detained, including two 17-year-olds, and now another 17-year-old boy is requested to be detained.
The boy, who has previously been unpunished, is suspected on probable grounds of preparation for public dangerous devastation and gross violation of the Act on Flammable and Explosive Goods.
Around 15 people were arrested during the crackdown and seven people, all under 23 years of age, were subsequently detained.
After the crackdown, three more people have been detained, a 37-year-old mother of small children, a 19-year-old man and an 18-year-old man.
During the crackdown, weapons, explosives and large quantities of narcotics were seized, among other things.
The text is updated.