At 22:00 on Wednesday evening, the police carried out a large operation in Björklinge outside Uppsala.
Four people were arrested, suspected of serious crime. One of them has since been released, but is still suspected of crime.
He who has been released is 15 years old, says prosecutor Linn Lööw to TT.
The three still detained are three teenagers between 16 and 18 years old who are suspected of involvement in a case that has been ongoing for a longer period and which, among other things, concerns extortion, according to the prosecutor.
Otherwise, the prosecutor does not comment on the case further.
