A ceasefire has been agreed between government forces and rebel factions in a key rebel-held Damascus suburb, Syrian state TV and opposition activists said.
Under the terms of the agreement, 700 gunmen will be allowed safe passage out of Daraya to the northern province of Idlib, state media said.
Around 4,000 women and children will be taken to shelters outside the town.
Daraya has been besieged and blockaded by government forces for nearly four years, with only minimal food deliveries allowed to reach the district.
The town is south-west of Damascus and has been pummelled by government air strikes, barrel bombs and fighting over the years.
The Britain-based Syrian Observatory for Human Rights also reported the agreement, under which rebels will give up all medium and heavy weaponry.
Meanwhile, activists in Aleppo said at least 13 people, mostly children, were killed when suspected government helicopters dropped barrel bombs into a crowded residential area.
Osama Abo Elezz, a doctor from the rebel-held part of Aleppo, said the bombs fell in the city's Bab al-Nayreb district, hitting more than one building.
He said the unguided explosives killed 10 children, including a two-month-old baby and a three-year-old girl.
Activist group the Aleppo Media Centre said at least 13 were killed.
Dr Abo Elezz said rescue teams were still working to pull survivors from under the rubble.
The Syrian Observatory for Human Rights put the death toll at 15, including 11 children, and four women.