The incident led to the diruption of train services in the Kharagpur division.
Police said that the rail slippers were blown off and a huge crater was created below the tracks at Puturia between Midnapore and Bhadutala stations owing to the impact of the blast.
Railway officials, police, bomb squad officials and other security forces have rushed to the blast site. The repair work over the affected track has already begun.
Many express trains along with the Nilachal Express and Chakradharpur Passenger have been stopped at various stations on the track that connects Jamshedpur with Howrah.
Maoists had called for 48-hr bandh in West Bengal, Orissa and Jharkhand.
The bandh is fully observed in the predominantly tribal inhabited Jhargram sub-division of West Midnapore district following the Maoists threats to the several shop-owners by firing gun-shots in the air.