Senior BJP leader and party's candidate for Karimpur Assembly bypoll Jay Prakash Majumdar was on Monday allegedly beaten up by Trinamul Congress (TMC) activists at the Phipulkhola area of Nadia district when he was entering a polling booth.

TV footage showed Majumdar being beaten up and kicked by some people.

Majumdar held Trinamul 'goons' responsible for the act, saying that wounds will heal but the incident is a 'clear' sign of the 'end of democracy' in West Bengal.

The BJP leader alleged that the Trinamul activists were false voters who had assembled in the area with the intention of rigging polls.

'But it will not demoralise me and I will continue to visit all the booths. I have complained to the Election Commission,' Majumdar, the vice-president of the state unit of the BJP, said.

The BJP on Monday said the incident shows jitteriness of state chief minister Mamata Banerjee and that she is trying to win by resorting to violence.

The manner in which Mamata Banerjee is resorting to political violence to win the by-elections shows her jitteriness and the Election Commission should take cognisance of it, BJP national spokesperson G.V.L. Narasimha Rao said.

The Nadia district unit of the Trinamul rubbished the allegations as 'baseless'. Locals had attacked Majumdar as they were angry with him for 'vitiating' the poll atmosphere, it said.

The EC has sought reports about the incident.

Trinamul MP Mohua Moitra declined to comment.

Besides Karimpur, bypolls are underway in Kharagpur Sadar and Kaliaganj Assembly seats.

While Kharagpur Sadar and Karimpur seats were held by the TMC, Kaliaganj was represented in the Assembly by the Congress.

In Karimpur, vacated by MLA Mahua Moitra after emerging victorious from Krishnnanagar Lok Sabha seat, CPI(M)-Congress candidate Gholam Rabbi is contesting against Majumdar and Trinamul's Bimalendu Singha Roy.

The Kharagpur Sadar seat fell vacant as the sitting Trinamul MLA contested and won a Lok Sabha seat.

Bypolls were necessitated in Kaliaganj following the death of Congress MLA Parmathanath Roy.

About 30.17 per cent of over seven lakh electorate exercised their franchise in the bypolls to the three Assembly seats till 11 am.