Dayalu Ammal, wife of late DMK patriarch M Karunanidhi, has been admitted to Apollo Hospital in Chennai, sources said.
According to news agency PTI, sources said she was hospitalised late last night, but declined to comment on her health condition, saying a statement is likely to be issued later in the day.
Dayalu Ammal is the mother of DMK chief MK Stalin.
More details awaited.
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections.