Ex-Portuguese President Mario Soares - regarded as a father of the country's democracy - has died at the age of 92, BBC reported.
Mr Soares was prime minister between 1976 and 1978, in the aftermath of the "Carnation Revolution" that ended decades of right-wing dictatorship.
A Socialist, he returned as PM in the early 1980s and served as president between 1986 and 1996.
He had been admitted to hospital in Lisbon last month following a "general worsening of his health", doctors said.
He played in a key role after the 1974 Carnation Revolution, a military coup that put an end to 48 years of dictatorship.
A fierce critic of the junta that ruled Portugal for the next two years, Mr Soares in 1976 became the first post-war democratically elected prime minister.