Apart from Purulia, Maoists have stepped up their activities in Bankura, West Midnapore and Birbhum districts ahead of the panchayat polls.
The state has already deployed additional forces in these districts.
After the murder of CPM leaders in Purulia, the district police are not taking any chances.
It has beefed up security to prevent further attacks by the Maoists, said Rakesh Gupta, IG (Western Zone).
On Monday night, six Maoists activists raided the house of Dubraj Hembram, local committee member of the CPM, at Gattinglohar village in Purulia and shot him dead.
Meanwhile, the CPM leaders in the district have urged its cadres to be careful and urged them not to venture alone during night. Bandhu Maji, CPM legislator, alleged that the district police have failed to check the activities of the Maoists in the district.