After mystery over Netaji's death, now Lal Bahadur Shastri's family raises questions about his demise. Family of former Prime Minister of India, Lal Bahadur Shastri, believe that his death in 1965 may not have been due to natural causes. He has urged the Modi government to declassify all the files relating to the former PM. He has also demanded that the government set up a probe commission to look into the matter.