The bomb, wrapped in polythene, was recovered from the toilet of the coach S-3 when the train arrived at the Manikpur railway station, Inspector General (Law and Order) Bhagwan Swarup said here.
Bomb disposal squad was summoned from Allahabad which defused the IED, he said.
A letter addressed to Railways Minister Suresh Prabhu was also found along with the bomb in which a demand for Rs 10 crore has been made, Swarup said.
