Knife attacker: has injured a teacher and three staff members at a school in the Norwegian capital Oslo.
According to police reports, the attacker has been apprehended though the motive of the attack was not immediately clear.
Teacher and three staff members at Brynseng School in the east of the city, are being admitted at the hospital with minor injuries. Sven Christian Lie, who is at 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.