The condition of 25-year-old Anjana, now in the intensive care unit of Indira Gandhi Cooperative hospital, is stable and she has been kept under observation, hospital sources said.
She was brought to the hospital here at around 1230 hrs last night after she consumed some tablets.
Akhila (30) and Anjana (25), daughters of Indian National Trade Union Congress leader N Rajan, were arrested on a complaint by CPI(M) that they had barged into their party office here and attacked one of their activists.
Asked by reporters in Delhi about the incident, Chief Minister Pinarayi Vijayan said "Ask police. I am not saying anything now".
More From This Section
Anjana, who had yesterday participated in a television debate, come home and allegedly consumed some tablets. As she showed signs of restlessness, she was immediately rushed to the hospital.
Her family said that during the TV debate, a woman CPI(M) leader had remarked that the two sisters were part of a "criminal goonda gang".
Akila told reporters, "We are being portrayed as members of a criminal gang which trespassed into the Marxist party's office with dangerous weapons."
She said her sister was under a lot of mental strain, but the family did not suspect she would take any extreme step.
She said the family wants to live peacefully.
"We kept quiet all these years because we are girls. A policeman behaved as if we are criminals," she said.