Former Maharashtra Chief Minister Ashok Chavan today sought exemption to appear as a witness before the two-member commission probing the Adarsh housing scam in Mumbai. Chavan, who had to step down as the Chief Minister in November 2010 following the scam, was summoned by the Commission to appear as a witness on May 23. However, he filed an application before the Commission seeking exemption. Chavan’s lawyer Amit Desai said that Chavan had filed an affidavit last year giving details about whatever knowledge he had about the Adarsh Society. Now, he had nothing more to add and hence did not want to depose. The commission will continue to hear arguments on his application on tomorrow and then pass an order.