The government on Monday, Mar 29 accepted the Prison Advisory Board"s recommendation and rejected the premature release plea.
The Prison Advisory Board has reportedly rejected the plea on eight grounds.
The government has also informed the Madras High Court on its decision.
The advisory board was constituted by the state Government following the directions of Madras High Court.
Nalini had been the member of Sri Lanka-based LTTE was also an active part of the assassination of the former Prime Minister of India. She has already spent 19 years in prison.