Chidambaram, native of Thazhiyur of Tirunelveli District in Tamil Nadu, was sentenced to life imprisonment by a court for murdering a 65-year old woman, a co-inmate of an old age home here following a quarrel in 2013.
He fell ill and was under treatment in the prisoners' ward in the GH for the last two months for age-related diseases, they said.
Chidambaram died around midnight yesterday, police said.