: A case was registered against a resident of Karaikudi in this district for an alleged 'derogatory and threatening' tweet against former union minister P Chidambaram and his son, police said on Tuesday.

The Karaikudi police registered the caseagainst the man hailing from the town fortweeting against Chidambaram and hisson Karthi Chidambaram.

While Chidambaram is a Rajya Sabha MP, his son represents Sivaganga constituency in the Lok Sabha.

The FIRwas registered based ona complaint by A Palaniappan, a local Congress functionary.

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