Students are supposed to be released for their lunch break, but are instead kept in their classrooms.
Police cars are seen parked inside River Valley High School on July 19, 2021. PHOTO: The Straits Times
2pm: An ambulance is seen leaving the school. Students are ushered into the school hall for a briefing by staff.
Some students are allowed to leave school grounds.
2.15pm: Canteen staff are allowed to leave the school premises. Several unmarked cars, believed to be ferrying plainclothes officers, are seen entering the school.
2.25pm: A police car is seen leaving the school.
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3.20pm: Staff lead students out of the school compound. Several parents are already at the school waiting for their children.
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