The Prime Minister, Shri Narendra Modi has expressed his condolence on the demise of former Chief Minister of Manipur and senior politician Mr. Rishang Keishing.“The demise of Mr. Rishang Keishing leaves a great void in the politics of the Northeast, a region he served with great diligence. My thoughts are with the family and well-wishers of Mr. Rishang Keishing in this sad hour”, the Prime Minister said.