"Prime Minister Narendra Modi and Chief Minister Mamata Banerjee have entered into a match-fixing as they both need each other's support to get bills passed in the Parliament and to deal with the Saradha chit fund scam," said Yechury, who was here to take part in a function to mark the birth centenary of veteran Marxist leader Harkishan Singh Surjeet.
"While Banerjee needs the support of the Centre to delay the ongoing probe into the multi-crore Saradha scam, Modi requires TMC support to get bills passed in the Rajya Sabha," he said.
To a query on Maoist activities in Bengal, Yechury said his party was strongly against the politics of violence which doesn't have any place in a democratic set up.
He, however, said talks should be held with the Maoist outfits to find a solution to the menace.
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"Only steps to rein in extremism will not serve the purpose, dialogue on the political front should be held to understand whether they (Maoists) have faith in our system of Parliamentary democracy to bring the misguided youth back to the mainstream of society," Yechury said.
Yechury blamed the Trinamool Congress for the spurt in Maoist activities in Bengal and said it was difficult to defeat them by a single-pronged approach.