An attacker has injured a teacher and three other staff members at a school in the Norway capital Oslo, police said, ONA reports citing The Independent.
The attacker has been apprehended and the motive was not immediately clear, police added. The four victims, all employees at Brynseng School in the east of the city, were taken to hospital with minor injuries.
Sven Christian Lie, of the Oslo police department, said an investigation had been launched and officers were speaking to witnesses. Police were first called at around 8.30am local time and arrived less than 10 minutes later.
The school has given no comment to Norwegian newspapers despite requests.