He had represented Kozhikode-one assembly constituency twice in 1991 and 2001. He served as forest and environment minister for some time in the previous Oommen Chandy-led United Democratic Front (UDF) government in 2001.
Sujanapal had also served as Kozhikode District Congress Committee President and was General Secretary of Kerala Pradesh Congress Committee in 1992. He was an AICC member and had written a number of books. Born in 1942, Sujanapal completed his graduation from Guruvayoorappan College, Kozhikode and obtained his law degree from Calicut Law College.
The funeral will be held on Friday.