The three districts to go to the rural polls today were Burdwan, Hoogly and East Midnapore.
"Three people have been killed in the violence in Burdwan district, " State Election Commission(SEC) secretary Tapas Ray told PTI.
Police said Sheikh Hasmat, the husband of a CPI(M) candidate Monowara Bibi, was killed in a bomb attack at Madhudanga gram Panchayat in Burdwan's Jamuria area.
Another person, Rajkumar Kora, who was allegedly among to those who threw the bomb, was lynched by the mob.
More From This Section
At least 12 people were injured in violence in sporadic violence in several parts of the Burdwan and East Midnapore districts.
CPI(M) candidate, Siddhartha Banerjee, for the Panuria gram panchayat in Burdwan was beaten up allegedly by ruling Trinamool Congress supporters, while a CPI(M) woman candidate, Suptava Karpah, was arrested at Rayan in the same district on the charge of influencing voters, the police said.
Polling was peaceful in Hoogly district, in which Singur falls, barring an incident when a local Trinamool Congress leader Bocha was seen allegedly interfering inside a booth when voting was on.
The sources said an average 75 per cent polling was recorded till 5 PM in the three districts. The percentage will increase as queues of voters were still waiting outside the booths to exercise their franchise.