The supervisors immediately alerted the station masters about the explosives meant to blow up the tracks and several long-distance trains were halted at various stations.
Two of the explosives went off while being removed but nobody was harmed
The services between Kishanganj in Bihar and Malda in West Bengal were stopped, causing inconvenience to several passengers travelling to and from North Bengal.Some of the trains that got halted were Satabdi Express, Padatik Express and Kanchankanya Express.
Two of the explosives, low-intensity ones, went off while the supervisors tried to remove them, although nobody was injured.
Clearing up the route would take some time, television reports quoted railway authorities as saying.