Kerala Congress (secular) leader Madapattu Murali was found dead at the PWD Rest house in Kottayam last night.
Murali (56) is survived by his wife Soudamini, children Prasanth and Priya and son-in-law Unnikrishnan.
He was the vice chairman of KC(S) and a former president of Kerala Congress (Joseph) group.
He was also former president of the Guruvayur Devaswom Board.
Party sources on Sunday said he had not been in active politics for the past three years.
He booked the room on Saturday afternoon. He was found dead when the room boys entered the room in the evening.
Investigations are on by police to ascertain the cause of the death.