The BJP on Monday claimed that an 82-year-old woman, a party worker's mother, succumbed to her injuries sustained during an attack by Trinamool Congress supporters in Nimta area of West Bengal's North 24 Parganas district last month.

BJP workers staged a protest in front of Nimta police station and burnt tyres on M B Road, even as the TMC claimed that its activists were not involved in any attack and she might have died due to age-related ailments.

Expressing grief over the woman's death, Union Home Minister Amit Shah tweeted, "Anguished over the demise of Bengal's daughter Shova Majumdar ji, who was brutally beaten by TMC goons. The pain & wounds of her family will haunt Mamata didi for long. Bengal will fight for a violence-free tomorrow, Bengal will fight for a safer state for our sisters & mothers," he said in a tweet.

Union minister Debasree Chaudhuri told reporters that the elderly woman succumbed to her injuries sustained during the TMC attack on her house on February 27. She had undergone treatment at a hospital for 27 days.

Dismissing the allegations, TMC MP Sougata Roy said, "The incident has no relation with politics and the BJP is unnecessarily trying to cash on a death."

"Any death is unfortunate and tragic. TMC men were not involved in any attack. We have information that she might have died due to old age-related ailments," he added.

Why was Shah mum when Hathras happened, asks Mamata

Chief Minister Mamata Banerjee Monday said she does not support violence against women and is not aware of the real reason behind the death and wondered why Union Home Minister Amit Shah remains silent when women are "tortured to death" in BJP-ruled Uttar Pradesh.

"I don't know how the sister has died. We don't support violence against women. We have never supported violence against my sisters and mothers.

"But the BJP is now politicising the issue. Amit Shah is tweeting and saying Bengal Ka Kya Haal hain. Why does he remain mum when women are attacked and brutalised in Hathras in Uttar Pradesh?" Banerjee said while addressing a rally in Nandigram.

Highlighting that Model Code of Conduct is in place, law and order is now under the jurisdiction of the ECI, Banerjee said, "Three Trinamool Congress workers have been killed in the last few days."