Four passengers were killed and 35 others injured when a bus overturned on the Lucknow-Agra Expressway in Tirwa area here, police said on Thursday.
The bus was carrying 70 passengers.
The incident took place on Wednesday night when the bus going from Jaipur to Bihar overturned after a tyre burst, police said.
The injured were rushed to a hospital where their condition was stated to be stable.