A man shot and killed at least five people with a bow and arrow in the Norwegian town of Kongsberg on Wednesday, Norwegian media reported . Police said two people were injured, including an off-duty officer. They have been transferred to the hospital. A 37-year-old Danish man has been arrested. Norwegian authorities assume that he acted alone and did not use any other weapons.

A motive was not known a few hours after the act. Police are investigating whether it was a terrorist act. There is no search for multiple perpetrators.

Kongsberg has about 25,000 inhabitants and is located 80 kilometers west of the Norwegian capital Oslo. A larger area in the city center was still cordoned off hours after the incident. The shooter has moved over a large area, where traces are now being investigated.

According to Norwegian media, the man started shooting at people in a supermarket. At around 6.15 pm, the police received a report that someone was walking around with a bow and arrow. The suspect was arrested at 6:47 p.m. He has Danish nationality, but lives in Kongsberg.

The national police have called on officers to arm themselves properly after the “serious incident”. Norwegian agents are usually unarmed. The authorities have now decided to temporarily supply officers with firearms.

“The information we are getting from Kongsberg is appalling,” Norwegian Prime Minister Erna Solberg said at a news conference late on Wednesday evening. “I understand that people are anxious, but I want to emphasize that the police have the situation under control,” Solberg said.