A police official said two CPI(M) agents were obstructed from entering booth numbers 76 and 77 of Jamuria seat, just as polling began at 7 AM.
One of the agents sustained head injury after he was beaten up allegedly by Trinamool Congress workers.
The injured person was taken to the nearest Primary Health Centre.
A Trinamool Congress worker, Sheikh Shamser, was arrested in this connection, the official said.
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(Reopens CES1)
In another incident, a 3rd polling officer died of heart attack at polling booth number 234 under Pandaveswar Assembly seat in Burdwan district.
Parimal Bauri died inside the booth, which disrupted polling for some time, district election office said.
Voting resumed after another person took charge in his place.
Bauri was a resident of Jamuria in Burdwan district.