The BSP and the SP clashed over a CD released by SP leader Amar Singh purportedly on collection of huge sums of money for Uttar Pradesh Chief Minister Mayawati's birthday celebrations unleashing a vitriolic attack from her party. Bringing out a Compact Disc (CD) of an alleged 'sting operation',Amar Singh demanded the derecognition of UP's ruling Bahujan Samaj Party(BSP) as a national party for allegedly "extorting money for the birthday celebrations" of its party president. In a letter to the Election Commission,Samajwadi Party general secretary Amar Singh claimed that BSP workers and leaders were involved in extorting money. He alleged the money collected was converted into demand drafts of small denominations issued in the name of Mayawati "to turn black money into white money." "I am releasing a CD which has the transcript of conversations of party leaders and functionaries which clearly shows that huge amounts collected are converted into demand drafts of smaller denominations issued in the name of Mayawati," Singh told reporters in New Delhi in the presence of SP supremo Mulayam Singh Yadav. Amar Singh also wrote letters to the President and the Prime Minister demanding a CBI enquiry under the Prevention of Corruption Act into the money collection drive by Mayawati. In Lucknow,stung by the demand for BSP's de-recognition,president of BSP's UP unit President Swami Prasad Maurya called Amar Singh "a political joker" and wanted a CBI inquiry into donations reportedly made by him to the Clinton Foundation.