New Delhi, Feb 9: Prime Minister Narendra Modi Tuesday condoled the demise of former Prime Minister of Nepal Sushil Koirala, saying India has a lost a “valued friend”. “In Sushil Koirala ji, NC (Nepali Congress) has lost a big leader who served Nepal for decades & India lost a valued friend. Pained by his demise. RIP,” he tweeted. “Sushil Koirala ji’s simplicity holds lessons for all of My condolences to the Koirala family & people of Nepal in this hour of grief,” Modi added. Koirala, who was credited with promulgating the country’s new Constitution in September last year to complete a stalled peace process, died today after a bout of pneumonia. 79-year-old Koirala had served as Nepal’s Prime Minister from February 2014 to October 2015 and was the president of Nepali Congress, the country’s biggest political party.