The Delhi Police today filed its second supplementary charge sheet in the 2008 cash-for-vote case in a court in the Capital naming BJP MP Ashok Argal as an accused. Argal's name was included in the fresh charge sheet after Lok Sabha Speaker Meira Kumar granted sanction for his prosecution to the Delhi Police. In the earlier two charge sheets, prosecution had not named Argal as an accused and had informed the court that it was awaiting the required sanction for his prosecution. Six persons, including Rajya Sabha MP Amar Singh and BJP leader L K Advani's former aide Sudheendra Kulkarni, have been arrested in the case.