Several people have been killed and others injured during an attack in the Norwegian town of Kongsberg, according to local police. The suspected attacker was using a bow and arrow, a spokesman for Norway"s southeastern police district, which includes Kongsberg, told CNN. The suspect attacked people at several locations before he was arrested, the spokesman said. Local police were first alerted to the suspect at 6:15 p.m.local time. An unnamed man has been arrested. Police have not ruled that the attack may be terror-related. When asked if the situation was being treated as terrorism, a press officer for Norwegian police said it was "not clear as of yet, it"s too early to tell." Kongsberg is located 85 kilometers (about 53 miles) west of capital city Oslo. Chief Oeyvind Aas said a suspect had been caught and seemed to have acted alone. The suspect reportedly moved throughout the town, and authorities have cordoned off several large areas. Media reports say the attacker opened fire at a Coop Extra supermarket on Kongsberg"s west side. Residents were ordered to stay indoors. The suspect has now been taken to a police station in the town of Drammen, police said, according to a BBC report. As yet police say the number of casualties is unclear, as is the motive for the attack. The injured have been taken for treatment at nearby hospitals. Dozens of emergency vehicles are reportedly at the scene, including ambulances, police cars and helicopters. Norway"s justice minister Monica Maeland has been informed and is closely monitoring the situation, the ministry tweeted. — Agencies