After a bus overturned in the Lalko area of Matta tehsil, killing four pupils and injuring nearly 30 others, police arrested the principal of a private school, the owner, and the driver.
The schoolchildren had taken the bus to the scenic Gabin Jabba valley, but it was involved in an accident on the way back on Saturday when the vehicle developed a technical fault.
Three children were killed and 31 others were injured in the initial attack. A fourth child was injured and died as a result of his injuries, bringing the total number of people killed to four.
