Based on a letter by Returning Officer and district Joint Collector Prasanna Venkatesh, the Nandyal police booked the Leader of Opposition in the Andhra Pradesh Assembly under sections 188, 504 and 506 of the IPC and section 125 of the Representation of People's Act (RPA).
The IPC sections relate to disobedience to order promulgated by public servant, intentional insult with intent to provoke breach of the peace and criminal intimidation.
The RPA section relates to promoting enmity between classes in connection with election.
The bypoll in Nandyal took place today. During the campaign early this month for his party candidate Silpa Chandra Mohan Reddy in Nandyal, Mr Reddy allegedly said "There is nothing wrong in shooting a person like Chandrababu Naidu who did not honour even one of the promises made".
In another instance, Mr Reddy reportedly replaced shooting with "hanging" while lashing out at the chief minister.
"As per the EC directions, I wrote a letter to the police today to file a case," the Joint Collector told PTI over phone.
Rayalaseema Zone Inspector General of Police Sheik Mohammad Iqbal said a case has been registered against Mr Reddy under relevant sections and an investigation was launched.
Official sources said the YSR Congress chief may be arrested since it was a criminal case.