Three persons were killed in two separate incidents while several vehicles and properties were ransacked and set ablaze by suspected Maoists in the Lalgarh since late Thursday.
The violence coincided with the first day of the indefinite blockade called by the Police Sanrash Birodhi Janasadharaner Committee (PSBJC).
The PSBJC also called a two-day-bandh on December 28 and 29 in protest against the assault on tribal women by the security force personnel.
The bullet-riddled bodies of Anil Chalak and Dayal Chalak, both residents of Chandra village near Lalgarh, were found at Bandhgora near Jhargram town on Friday. Another resident of the same village, Ganesh Hansda, was also found in a critical condition with wounds inflicted by sharp weapons.
All the three men were abducted from their homes on Thursday evening.
While all three of them were members of the Communist Party of India (Marxist), Anil Chalak was a former panchayat president and Mr. Hansda was a current panchayat member.