The Congress issued a stern warning to those indulging in anti-party activities in West Bengal and asked its state unit to submit a report on acts of vandalising hoardings outside the party office in Kolkata.

A day after he snubbed West Bengal Congress chief Adhir Ranjan Chowdhury for questioning TMC supremo Mamata Banerjee’s loyalty to the INDIA bloc, several posters and hoardings of Congress president Mallikarjun Kharge were defaced with ink in front of the party’s state headquarters in Kolkata on Sunday.