The Mumbai police have registered a case against unidentified persons for misusing the letterhead of the Bharatiya Janata Party (BJP) to announce a "candidate" for the Palghar Lok Sabha constituency in Maharashtra, an official said on Tuesday, reported news agency PTI.

The bogus letterhead was circulated on popular messaging platform WhatsApp in which the BJP "candidate" of the adjoining Palghar constituency was announced, he said, reported PTI.