If a cheque issued to your brother has bounced, a direct cheque bounce case against the issuer may not be maintainable if your brother wasn't the original lender. Your brother may need to issue a written notice to the issuer, and if there's no response, file a complaint with the local magistrate. Alternatively, a civil recovery suit against the issuer might be an option, or a cheating case if your brother can prove he is the lender with supporting evidence.