Claiming that the Maoists were getting "complete support and protection" from Trinamool Congress, CPI(M) asked Congress and UPA to explain why the Mamata Banerjee's party continued to remain in the Union Cabinet despite "negating" the government's assessment of the Left extremist threat.

Apart from legitimising the brutality of Maoist violence, Trinamool Congress was "directly negating the assessments of the Prime Minister and the Union Home Minister that Maoist violence constitutes the greatest threat to India's internal security", CPI(M) Politburo member Sitaram Yechury said.

"Yet, the Trinamool Congress ministers continue to remain in the Union Cabinet. The UPA and the Congress party owe an answer to the country," he said in an editorial in the forthcoming issue of party organ 'People's Democracy'.

"The Maoist-Trinamool nexus has become so integrated that one of the Maoist leaders in an interview openly declared their desire to see Mamata Banerjee as the next Chief Minister of West Bengal," Yechury said.

"It is, therefore, little wonder that Ministers in the Union Cabinet belonging to Trinamool Congress are pressurising the Union government to withdraw the central security forces which are currently in joint operations with the state security forces against the Maoist activities," he said.