The Maoists, around 20 in number, set on fire two tankers and a coal-laden truck late last night, Superintendent of Police, Operation, Sanjay Kumar Singh said.
The Maoists left leaflets on the spot protesting the alleged rape of a jailed woman cadre in Sitamarhi prison, he said.
The ultras said in the leaflet that they have called a bandh in the state today to protest the alleged rape of their cadre.