Congress chief Mallikarjun Kharge, general secretary Priyanka Gandhi Vadra, senior leaders K C Venugopal, P Chidambaram and Salman Khurshid were among the party's top brass taking part in the satyagraha at Rajghat.
Unfazed over allegations of wrongdoings in Madhya Pradesh Professional Examination Board scam, state Chief Minister Shivraj Singh Chouhan on Monday said he will soon file a defamation case on the issue.