She was not keeping well since afternoon and was admitted to the corporate hospital later in the evening, they said without divulging details.
Ammal, besides former Telecom Minister A Raja, DMK Rajya Sabha MP and Karunanidhi's daughter Kanimozhi and 16 other accused have been summoned to appear on May 26 by a Delhi court which took cognisance of a charge sheet filed by the Enforcement Directorate in connection with a money laundering case related to the 2G scam.