On June 8, Kishore had tweeted a derogatory message on C N Annadurai followed by similar messages on M Karunanidhi and M K Stalin, police had said
The Chief Minister also pointed out that the State government has been adopting a multi-pronged approach to contain coronavirus infection.
The order was served to Kalyanaraman at the Gobichettipalayam sub-jail.
Queries were also posed to the municipality if it was treating sewage water before letting it into the river and how many treatment plants were available for the same.
Under this law, those indulging in anti-social activities or disturbing peace will be given jail terms ranging from seven to 10 years.