Kathmandu : The United Nations Secretary General Ban Ki-moon has extended condolences after the demise of former Nepali Prime Minister Sushil Koirala.

According to Kathmandu Post, a condolence message issued on behalf the UN Secretary-General by his spokesman states that Ban was saddened by the passing of Koirala, a widely respected political leader who guided Nepal through its complex transition and constitutional process.

The statement said that Koirala worked tirelessly to unify people and bring parties together in a spirit of compromise and he greatly contributed towards Nepal's democratizsation and peace process.

The Secretary-General extends his condolences to the Koirala family and the people of Nepal.