Following the tip, police carried out several home searches, leading to the arrest.
“It’s actually three people who have been questioned during the afternoon. Two of them, a 37-year-old and a 42-year-old, have been released. A 16-year-old has been detained,” said Håkan Nöjd of the Västmanland police to the TT news agency.
Police searched homes at three addresses in Köping on Wednesday and confiscated several weapons. Nöjd could not comment on exactly how many weapons or of what type, but confirmed that the weapons required licences.
“I haven’t seen the video clip, but the police have launched an investigation into illegal weapons possession,” he said.
Inspector Per Strömbäck of the Västmanland police told the Vestmanlands Läns Tidning newspaper the two of the men, including the 16-year-old, can be seen in the YouTube clip.
“In the film the 16-year-old makes statements which led to him being arrested. I haven’t seen the clip myself and can’t say whether he poses with a weapon,” he told the newspaper.
Strömbäck is also uncertain if there is a connection to the recent school shooting in Kauhajoki, Finland in which 22-year-old Matti Saari shot ten people and then took his own life.