Authorities said the number of victims and the motive is unclear but the suspect is in police custody.
A man armed with a bow and arrows killed several people and wounded others Wednesday near the Norwegian capital of Oslo before he was arrested, authorities said.
The police chief in the town of Kongsberg said there was “a confrontation” between officers and the assailant, but he did not elaborate. He said there were several deaths but offered no details.
Norwegian broadcaster NRK reported that at least four people were dead.