He died of a massive cardiac arrest, reports said. Dr. Israr was suffering from back pain and heart disorders for a long time. His funeral prayers was held in Lahore on Wednesday. Dr. Israr was the head and founder of Tanzeem-e-Islami. He had a huge following in Pakistan, India and Gulf countries, especially in Saudi Arabia. A medical doctor by profession, Dr. Israr was one of the founding members of the Jamaat-e-Islami. He was popular for his lectures and TV debates.