At least 15 school children were killed on Thursday in a road accident in Uttar Pradesh's Etah district, police said.
The school bus was hit by a speeding truck on the Patiali road.
Fog was the main cause of the accideny, an official told IANS.
While schools in the state have been closed until Friday 20 due to poor weather conditions, the J.S. Public school to which the bus belonged was open.
The bus had more than 60 students.