"The TMC government itself is the main trouble-maker and responsible for such situation," said a resolution adopted at the end of CPI's two-day national executive meeting here.
CPI also asked the West Bengal government to "cooperate" with Central agencies in unearthing terrorists networks.
"The National Executive of CPI demands that government in West Bengal should take decisive steps to stop the communal tensions and cooperate with Central agencies to unearth the terrorist networks which are jeopardising the security of the country as well as effecting relations among neighbouring countries," the resolution said.
CPI said its General Secretary S Sudhakar Reddy has submitted a report to the National Executive.
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Expressing concern over the deteriorating "communal situation," the report alleged, "Sangh Parivar is hastening the process of communal polarisation by various means. They are being complimented by the minority communalism."
At the end of the executive, Reddy demanded confiscation of black money, which he said should be used for elimination of poverty.
Observing that reported pacts with foreign countries cannot be used as a cover to maintain secrecy, he asked NDA government to declare "when and how such pacts were signed."