All posts of paramilitary forces and police stations have been told about the inputs and have been asked to be extra careful while carrying out anti-Naxal operations and conducting their other duties, official sources said.
According to the inputs, in order to strengthen Darba division, key leader of Maoist, including those based in Andhra Pradesh and Odisha, have planned to inflict major casualties on the troops deployed on the national highway between Kamanar to Tongpal in Sukma district.
Senior officers are also on their hit list, sources said.
It is also learnt that Maoist have gathered huge quantity of explosives from Malkangiri area of Odisha for the purpose, they said.
The inputs came a fortnight after the Naxals killed seven CRPF men in a deadly landmine blast in the worst Maoist violence-affected Dantewada district of Chhattisgarh.