"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.
Two suspected terrorists were killed in a blast at a house in Khagragarh in Burdwan (West Bengal) on October 2, which is currently probed by NIA.
CPI said its General Secretary S Sudhakar Reddy has submitted a report to the National Executive.
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."
Stating that the US could get the names of black money holders from foreign countries, Reddy asked the Central government to make such efforts.
The CPI report also alleged that NDA government at the Centre has launched an "offensive" against working class by initiating "anti-labour reforms".
Alleging that Narendra Modi government is in a "hurry to complete imposition of the policies of neo-liberalism," the report said, "It (the government) is one by one handing over national assets to the private sector. PPP mode is being used to privatise key sectors like railway and even defence. FDI up to 49 per cent is being allowed in finance sectors including insurance."
Reddy expressed that BJP came to power without a substantial vote percentage in recent elections.