The other three sisters and their father, who also jumped into the sea at Kalapet on the Puducherry-Markanam route, were rescued by local fishermen and are undergoing treatment in the Government General Hospital here, police said.
While the sisters were staying in the residential quarters of the Aurobindo Ashram for the past several years, their parents were staying in the town limits.
The four rescued persons were identified as Gadadhar Prasad (father-80), and three daughters Jayashree (54), Niveditta (42) and Hemalatha (40).
The dispute between the sisters and the Ashram Trust can be traced to 2002 when the ashram took disciplinary action against Hemalata Prasad for misconduct after an inquiry by a retired District Judge appointed by Madras High Court.
The five sisters staged a high drama yesterday with one of the climbing up to the top floor declaring that they would all commit suicide if the police evicted them. However, police held talks and managed to shift them before evicting them later in the evening yesterday.
They along with their parents allegedly struck a suicide pact and proceeded early today to the Kalapet coastal village to execute their plan, police said.