Lebanese troops have deployed in the northern city of Tripoli to end fierce fighting between Hezbollah sympathisers and supporters of the government.
Thousands fled their homes as several people were reportedly killed in heavy exchanges of machine gun fire and rocket-propelled grenades.
Meanwhile, an uneasy calm has descended on Beirut, after four days of running street battles left 38 people dead.
The clashes have triggered fears of a return to Lebanon's 15-year civil war.
On Saturday, Hezbollah agreed to pull its fighters off the streets of the Muslim western Beirut after the army overturned government measures aimed at curbing the group.
But many roads remain blocked, including the airport road, as the Iranian-backed Shia group continues its campaign of civil disobedience.
Arab foreign ministers are currently holding an emergency meeting on the crisis in the Eg
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