Kharagpur/Bankura, May 10 -- nAfter Tuesday's "tight-slap" came the Thursday's "sit-ups." Mounting a no-holds-barred attack on Prime Minister Narendra Modi for linking some of Trinamool Congress candidates to coal mafia, TMC chief Mamata Banerjee on Thursday dared the PM to prove his charges or do sit-ups.

"I challenge you Mr Modi to prove what you have said about my candidates accusing them of having links with the coal mafia. Prove your charges and I will withdraw all my 42 candidates from the electoral fray. If you can't, then you will have to hold your ears and do one hundred sit-ups before the public," she said

Modi had said, "TMC mafia raj is continuing in the neighbouring coal mines and their leaders are minting money while the coa...