Security has been tightened in Maoist-hit districts in south Odisha.Along side, and state-run buses have stopped plying in the region in view of "martyrs' week", being observed by Maoists.

The Odisha-Chhattisgarh border in Malkangiri district has been sealed and all police stations in Rayagada district have been put on high alert, according to senior police officers quoted by PTI.

As a precautionary measure, the Odisha State Road Transport Corporation (OSRTC) has suspended its bus services in south Odisha districts for a week since Sunday, an official of the OSRTC said