Prime Minister Narendra Modi has expressed grief on the passing away of former Prime Minister of Nepal Sushil Koirala.<br/><br/>In a tweet, Mr Modi said, with the death of Mr Koirala, India has lost a valued friend and Nepali Congress has lost a big leader who served Nepal for decades.<br/><br/>He said, Mr Koirala's simplicity holds lessons for all. Mr Modi expressed his condolences to the Koirala family and people of Nepal.