LUCKNOW, July 5 -- An eight-year-old boy was killed while 10 school children were injured when a bus ferrying them overturned after falling into a roadside pit in Sitapur's Thanagaon police station area on Friday afternoon, confirmed police officials.

They said one school girl was critical and had been referred to King George's Medical University's trauma centre in Lucknow while nine other children were treated at a local hospital in Sitapur.

An official said the incident took place at around 2.30 pm when a school bus of Sardar Vallabh Bhai Patel School, carrying around 40 students, overturned while trying to save a child who was grazing goats on the roadside, fatally injuring him.

The bus was heading towards Halimnagar after school ho...