More than 70 middle school students on four buses were injured in a rear-end collision as they were returning from a school trip in Gangwon Province on Friday, according to reports.
After the accident, those who sustained serious injuries were taken to nearby hospitals.
The buses were involved in a collision with three trucks and a sedan on an interchange in Hongcheon, Gangwon Province, police said.
The police said the driver of one of the school buses was falling asleep while driving.