Passenger Anil Nunia, a native of Katihar district, was allegdly pushed from the North-East Express by the TTE following an argument last night, Barsoi railway police station's Assistant Inspector Muzzamil Khan said.
Nunia's wife alleged that the TTE had asked him to pay bribe after he got down at Sudhani station to fetch water but he could not produce the ticket and told him that the ticket was with his wife, travelling in the same train.
An FIR was registered after the train reached Barsoi railway station.
Meanwhile, Nunia has been admitted to the hospital, police said, adding efforts are on to identify the accused.