Supporters of Walmik Karad, who was arrested in an extortion case connected to the murder of a sarpanch in Beed district, on Tuesday threw stones at buses and set tyres on fire in Parli town after MCOCA was invoked against him, police said.

Karad, an aide to Maharashtra minister Dhananjay Munde, has been charged under the Maharashtra Control of Organized Crime Act (MCOCA), an official said.