The Maoists, numbering over 100, stormed the power sub-station in Badigram village last midnight and blew it up with explosives, Deputy Superintendent of Police (DSP) Virendra Sahu said today.
A room of the power sub-station was totally wrecked in the explosion hitting power supply, Sahu said.
Some employees at the sub-station managed to escape just in time, Sahu said.
A case has been registered and a search for the Maoists was being made.