Qamar-ul-Islam (69) was suffering from diabetes, hypertension and neuromuscular disorder, sources at the Narayana Health Hospital, where he was admitted a few days ago, said.
A popular leader from the Hyderabad-Karnataka region, the six-time MLA represented Gulbarga Northconstituency.
He had served as cabinet minister for housing and labour department in the Karnataka government, besides being a Lok Sabha member from 1996 to 1998.
He was dropped from the state cabinet by Chief Minister Siddaramaiah following a reshuffle in June 2016.
Various leaders, including Siddaramaiah and his cabinet colleagues mourned the death.
Disclaimer: No Business Standard Journalist was involved in creation of this content