Former Nepali Prime Minister and Nepali Congress (NC) President Girija Prasad Koirala passed away on Saturday afternoon at 12:10 p.m. local time Xinhua reported.
The NC Central Working Committee (CWC) informed media's report about his death after medical doctors involved in Koirala's health check up handed them with his death certificate.
Four-time Prime Minister Koirala was suffering from chronic obstructive pulmonary disease for a long time and remained unconscious since Saturday morning.
Earlier on Saturday Koirala was breathing with the help of artificial oxygen supplied by medical doctors.
His dead body will be kept at Open Theater on Sunday before cremation, according to NC CWC leader Sher Bahadur Deuba.
Hundreds of NC cadres and senior leaders of major political parties are thronging to Koirala residence in capital Kathmandu.
Most importantly, Nepali President Ram Baran Yadav, the single and the largest opposition party Unified Communist Party of Nepal (Maoist) (UCPN-M) President Prachanda have reached to Koirala's residence.
A key figure of Nepali politics, he was democratically elected Prime Minister in 1991 and then served the country from 1991-1994, 1998-1999, 2000-2001, and from 2006-2008.
He began his political career from labor movement, he founded Nepal Trade Union Congress in 1948. Koirala was mobilizing a labor movement at a largest jut mill called Biratnagar Jute Mill in his home town Morang, some 240 km south east of capital Kathmandu a largest Jute Mill in the country.
Koirala was born in 1925 in Bihar of India at the time when his father Krishna Prasad Koirala along with his family was exiled by Rana rulers.
Koirla was keenly involved in Nepal's political scenario for six decade. Recently, Koirala was nominated for Nobel Prize by Nepali government to honor his effective role resolving decade long insurgency and peace process.
In addition to this, while he was admitted to hospital, Koirala expressed his last wished of concluding ongoing peace process in Nepal.
Koirla was survived with only daughter who is currently in the post of Deputy Prime Minister and Minister for Foreign Affairs.