A delegation of CPI leaders comprising party general secretary S Sudhakar Reddy and national secretary D Raja made an official complaint with the EC over alleged violation of model code of conduct in Bihar by Shah.
"The delegation demanded action against Shah for his provocative words while addressing an election meeting at Raxaul in East Champaran on October 29. The leaders submitted an official complaint to the Commission," the CPI said in a statement.
Banerjee had reportedly made the statement during a public rally in West Bengal's Birbhum on September 20.
In their joint letter to EC, Reddy and Raja maintained Shah's speech was "highly provocative and meant to polarise voters on communal lines".
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"We, therefore, urge upon the Election Commission to take serious note and initiate urgent and appropriate action on Amit Shah and the BJP," the letter said.
Addressing an election rally in Bihar's Raxaul yesterday, Shah had said that there will be bursting of fire crackers in Pakistan if his party loses the polls in Bihar.