TWO teachers, including a school principal, opened fire on a group of their pupils in KwaZulu-Natal on Thursday, killing one and seriously wounding three. The incident happened when pupils from a high school in the Cele district, south of Durban, stoned their teachers to protest the bus fare required for a school outing, The Starreports. The teachers had taken refuge in the staff room. According to the newspaper, the school principal and a colleague emerged brandishing pistols. Several shots were fired and a pupil was killed and three others wounded. Police said the two teachers have been arrested and will face murder charges.