Maoist existence was noticed in the forest areas of Wayand, Palakkad, Malappuram, Kozhikode, Kannur and Kasargod districts, Chennithala said in a written reply.
Stating that it was not proper to disclose more on the subject in view of security reasons, Chennithala said several checks had been conducted in the areas where Maoist presence has been reported.
A special team comprising three companies of armed forces has been constituted for anti-Maoist drive, he said.
He also said necessary precautionary measures had been taken to monitor the link between migrant workers with Maoist.
To a question whether information about migrant workers were gathered, he said contractors or agents who bring the migrant labourers to the state were supposed to provide the details of workers to the nearby police station.
Close watch was also on the places of migrant workers camps, he said.