The attacks took place in Hooghly, Howrah, Bankura, Birbhum, North and South 24 Parganas, Cooch Behar and Darjeeling districts, CPI(M) sources said.
Six CPI(M) offices at Barrackpore in North 24 Parganas district were burnt down and the car of former Higher Education minister and CPI(M) leader Sudarshan Roychowdhury was damaged at Serampore in Hooghly district, the sources said.
The car of former minister and veteran CPI(M) leader Abdur Rezzak Mollah was attacked with bombs at Baruipur in South 24 Parganas district, they said.
The police said that in Pursura in the same district, seven bombs were found in a CPI(M) party office after receiving a complaint from Trinamool Congress.
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At Salkia, Bagnan, Udaynarayanpur and Domjur in Howrah district, party offices were vandalised. The police said the situation was now under control.
CPI(M) Bankura district leader Amiyo Patro alleged around 30 armed TMC workers raided the Marxist party office at Taldangra with the police remaining a mute spectator.
In Birbhum distroct, Debashis Ganguly, Suri CPI(M) zonal committee secretary, charged a TMC procession with around 100 persons broke into the party office and vandalised it.