Four people slightly injured in knife attack at Oslo school

OSLO, March 19 (Xinhua) -- Four School employees were slightly injured Tuesday after a student threatened a teacher with a knife at a primary School in Norway's capital city, public broadcaster NRK reported.

Police said they have arrested the attacker at Brynseng School in Oslo. The four injured, a teacher and three other staff members, have been sent to the hospital.

The incident happened in a kitchen at the School, police operations manager Arve Rotterud told NRK.

The situation is under control and the School continues to operate as usual, the report said.