Al-Hafez died in a Beirut hospital after a long-running battle with an undisclosed chronic illness, medical officials said.
A Sunni Muslim, he was picked by then President Suleiman Franjieh to form a government in 1973. The prime minister's job is reserved for a Sunni under Lebanon's sectarian power-sharing system. Sunni religious leaders who opposed Franjieh refused to recognize the appointment. Al-Hafez was forced to resign about two months later.
The crisis, along with a battle between Lebanese troops and Palestinian guerrillas that year, contributed to the tensions that burst into all-out civil war in 1975. The sectarian conflict lasted 15 years and killed 150,000 people.
Al-Hafez later served as member of parliament, representing his hometown of Tripoli until 1996.
Prime Minister FOuad Saniora declared a three-day mourning period for al-Hafez, during which flags at government institutions will be flown at half-staff.
Al-Hafez will be buried in Tripoli, a port city in northern Lebanon, on Tuesday.
Tags: Lebanon, source: AP, Ya Libnan
