In a memorandum to the prime minister, the party claimed the BJP had begun attacking Left supporters in the northeastern state immediately after the results of the Assembly polls were declared.
"We request your immediate intervention to stop these attacks and violence and to maintain peace and normalcy in the state" before the situation "worsened", it said in the memorandum addressed to the prime minister.
"After the election results were out, goons of the BJP have unleashed a reign of terror and all-round attacks on members and supporters of the CPI(M), their houses, party offices and mass organisation offices throughout the state," said the memorandum which was submitted to Modi in Parliament.
Later talking to reporters, CPI(M) leader Mohammed Salim also accused the state Governor of "working like a Sangh Parivar supporter".
"He holds a constitutional post and is offering a stamp of approval to the unconstitutional, undemocratic, illegal vandalism. We hope the Centre would take note of this," Salim said.
Not only the Left, but all secular and democratic parties should condemn "this absolute vandalism", he said.
Raja said the BJP leadership should take the "responsibility for the collapse of law and order and such undemocratic and unconstitutional activities of its cadres in Tripura".
The Left, which ruled Tripura for 25 years, was ousted by the BJP in state Assembly elections, the results of which were declared on Saturday.
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