West Bengal CM Mamata Banerjee on Wednesday expressed her "unequivocal disapproval" over a NITI Aayog's report wherein it incorrectly showed West Bengal as Bihar. She also wrote a letter to NITI Aayog's Vice Chairperson demanding an apology and immediate rectification. "Such a grave lapse in an official document...isn't merely a technical error but an affront to [Bengal's] identity," she said.