A mass hysteria at a high school in Jempol has forced 165 of its dormitory students to be sent home on a five-day leave.
The shocking incident, which broke out at SMK Batu Kikir since last Saturday night, has effected 50 students between the ages of 13 to 17, raising fears of something sinister.
According to the school, the dormitories were vacated to make way for necessary treatments.
Lessons, however, are expected to resume as normal for regular students.