After getting information about the explosives, a police team searched the train thoroughly and recovered the crude bombs hidden under a berth in the D-4 compartment, SP (Railways) Praveen Srivastav told newsmen here.
No arrests have been made yet.
A bomb squad from Ranchi is set to examine the explosives before defusing them.
Divisional Railway Manager A.S. Upadhyay and other senior railway officials reached the station after getting the information.
The train proceeded on its onward journey after half-hour of delay from its schedule departure, railway officials said.