A resolution adopted at the meeting, organised here by the People's Union of Civil Liberties, said Sen had been fighting for the well-being of the scheduled tribes in Chhattisgarh and was facing several repressive measures.
But he had been charged with sedition and awarded life term by a Raipur court, it said.
"This is utterly unacceptable and the leader should be released unconditionally and the Centre should intervene in the matter," the meeting said.
A joint memorandum containing signatures of all those championing human rights would be sent to the President seeking the leader's unconditional release.
An activist of the People's Union of Civil Liberties, Sen was arrested on May 14, 2007 from Bilaspur.
Puducherry: A joint meeting of human rights activists and delegates of civil liberties organisations on Sunday sought the Centre's intervention for release of rights
campaigner Binayak Sen who has been sentenced to life for sedition.
First Published: Sunday, January 02, 2011, 11:39