"An estimated 67.34 per cent of the total 2,55,75,744 voters cast their votes till 3:00 PM," Election Commission sources said.
Thirteen persons were injured in a clash between CPI(M) and Trinamool Congress supporters at Haroa in North 24 Parganas district under Minakha assembly segment of Basirhat Lok Sabha constituency.
Supporters of the rival parties pelted stones and used lathis in the clash which took place near two polling booths at Brahmanchak area of Haroa, police sources said.
District Superintendent of Police Tanmoy Roychowdhury, however, said there was no firing and 13 persons were detained.
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State Chief Electoral Officer Sunil Gupta said voting was so far peaceful except some stray incidents.
"We have not yet received report of any major incident on disruption of law and order or complaint of booth jamming or violation of the Model Code of conduct," he said.
Two bombs were allegedly thrown by unidentified persons at the car of former Kolkata deputy mayor Mina Devi at Bowbazar in Kolkata when she was crossing the area.