South Korean teacher questioned over fatal stabbing of pupil

People mourn the death of a pupil allegedly stabbed to death by a teacher outside an elementary school in Daejeon, South Korea (Kang Soo-hwan/Yonhap via AP)

South Korean police are questioning an elementary-school teacher who allegedly stabbed a pupil to death in the city of Daejeon.

The incident which happened during after-school care on Monday has shocked the nation and prompted the country’s acting president to instruct reviews of school safety standards.