Within hours of sacked BSP leader Naseemuddin Siddiqui levelling charges against her, party chief Mayawati on Thursday hit back and accused her one-time protege of "blackmailing people by recording their phones and then extorting money". The Bahujan Samaj Party (BSP) supremo told the media here that Siddiqui is a blackmailer who misused party funds for his personal welfare.