Congress and NCP had organised a joint public meeting ahead of the Ahmednagar Municipal Corporation elections to be held on December 15, where Chavan, Deputy Chief Minister Ajit Pawar and other leaders were present.
According to police, over 300 agitators, believed to be supporters of anti-graft crusader Anna Hazare, had gathered at the public meeting at the Mahatma Gandhi Maidan.
"As soon as Chavan began his speech, the protesters showed black flags and raised slogans demanding early passage of the Jan Lokpal Bill," Police Inspector of Tofkhana police station Vijay Pawar said.
Maharashtra Congress chief Manikrao Thakre, state NCP chief Bhaskar Jadhav, Revenue Minister Balasaheb Thorat, Agriculture minister Radhakrishna Vikhe Patil, Tribal Development Minister Madhukar Pichad were also present at the meeting.
