According police officials, the rebels blew up a rail track near Dania railway station in Ramgarh district late Saturday night, Nov 29.
Around 10 trains services have been affected and their routes have been diverted, police said.
Maoists blasted another a track near Bano railway station in Simdega district early Sunday morning, Nov 29 damaging about one metre of the line.
On Saturday night, Nov 28, Maoists blew up a school building in Pipara village of Palamau district. Detonators were used to blow up the building, police said.
Maoists have blown up 10 school buildings this month (Nov). The rebels have been targeting schools as security forces camp there during elections.