"Received very touching New Year greetings from @MamataOfficial ji & that too in Gujarati! I thank Mamata Didi & wish her a great 2016," Modi tweeted.
Soon after, Mamata tweeted, "Glad you liked the New Year greetings I sent you in Gujarati. Thanks too @narendramodi ji for the greetings you sent me in Bengali."
The bonhomie between Modi and Mamata came amidst an open fight between her party Trinamool Congress and BJP over the recent violence in Malda.
BJP, on the other hand, has alleged that Mamata Banerjee was playing the "dirtiest vote bank politics" in Malda as she was trying to "communalise" issues by using "extremist forces".
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Mamata has also accused the Modi government of "non-cooperation" and alleged that it had curtailed funds for various projects in the state.
"Had there been full cooperation of the Centre, huge employment opportunities could have been generated in the state," Mamata said recently.