Norwegian Police arrested a man who hijacked a bus and killed three people, including the bus driver, the Associated Press reported.
Police spokesman Odd Arve Solvag said the fire department initially believed the incident, which happened on Monday, was an accident, and apprehended the 50-year-old man who was later arrested by police, the AP reported.
Authorities said the knife attack happened in Sogn and Fjordane county and was first reported in connection with a bus accident, according to the AP. Solvag could not release information on the suspect, but said he was not an "ethnic Norwegian," the AP reported. The motive was not immediately clear.
The incident happened over 100 miles northwest of Oslo, Norway's capital, on a deserted mountain road near the town of Ardal, according to BBC News. According to Oslo police spokesman, Andre Krakenes, authorities were preparing to deploy an anti-terror unit to the scene by helicopter, but called it off after being notified the suspect was arrested, the AP reported.
"The situation was very unclear," Krakenes told the AP. "They only told us that there was one man on the bus who had hijacked the bus and the driver was hurt. That was the first message we got here."
Police officer Joern Lasse Foerde told a local TV station, TV2, he had "no information to indicate there was anyone else than the three victims."
Though multiple killings are rare in Norway, the country experienced its worst massacre two years ago when a right-wing extremist killed 77 people during a shooting rampage.