A SICK primary school teacher lured her 7-year-old pupil into a room before strangling and stabbing her to death.

Kim Ha-neul was killed in South Korea on Monday because the teacher was “annoyed”.

A 48-year-old teacher at the young girl’s school reportedly lured her into a room after she was the last to leave class.

The adult, who has not been named, admitted to killing her student.

This killer teacher was hospitalised with self-inflicted stab wounds, per The Times.

The teacher told police: “I got annoyed just three days after returning to work.”

She has been off work for three weeks in December with depression.

The teacher reportedly told police she bought a knife from a local shop on earlier on Monday.

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