He has been admitted to the Government ESI Hospital here, a health department official said.
The daughter, son-in-law and granddaughter of the MLA were already undergoing treatment at the ESI hospital after contracting the infection, after their return from Madurai a couple of days ago.
He had undergone the test three days ago.
Earlier, four ruling party MLAs, including Higher Education Minister K P Ambalavanan, had contracted the virus.
Further, four DMK MLAs, including the deceased J Anbazhagan, had tested positive for COVID-19. NVM SA APR RAVINDRANATH APR RAVINDRANATH