A view of Syrian Arab Red Crescent, a humanitarian non-profit organisation, personnel delivering aid in Eastern Ghouta, Syria.
At least eight civilians were killed on Saturday in intense air bombardment by the government on Douma, the last town under rebel control in Eastern Ghouta near Damascus, the Syrian Observatory for Human Rights, a war monitor, reported.
But the evacuations stalled this week amid reports Jaish al-Islam remained divided over a withdrawal, and heavy bombing hit Douma on Friday afternoon for the first time in around 10 days.
State TV said Republican Guard forces were pushing in.
It remains unclear exactly why the talks between Moscow and Jaish al-Islam have faltered.
The Observatory also said shell attacks on the city of Damascus killed four people on Friday.
SANA said they faltered when the rebel group refused to release detainees it is holding in Douma, warning the military assault would only stop if hostages are released.
"A gaggle of buses carrying loads of Jaish al-Islam terrorists and their households go away Douma in preparation of them being transported to Jarabulus", a rebel-held metropolis in northern Syria, state info firm SANA acknowledged, referring to the rebels.
Those still trapped in Douma had been nervous that any attempt to renege on an evacuation would only prompt Russian Federation and regime warplanes to resume deadly strikes. "As far as Douma is concerned, resolving it militarily is the solution", the commander told Reuters.
But Jaish Al Islam spokesman Hamza Bayraqdar in a statement late Friday denied that the group had targeted any Damascus neighbourhoods.
From the western direction, the Syrian army and Palestinian Al-Quds Brigade (Liwa Al-Quds) have manged to fight their way through most of the farmland buffer zone between the M5 highway and Douma to reach the city's gates.
Mohammad Alloush, the Jaish al-Islam political official, said the group wanted to continue negotiations.
Backed by Russia, Syrian troops have recaptured 95 percent of Ghouta since February 18 through a combination of a deadly air and ground assault and evacuation deals. Many more people had stayed, fearing what might follow departure from home towns they had not abandoned through seven years of war.On Friday, the buses stopped.Speaking before the airstrikes, the medical worker said he had made a decision to stay because his work was not finished.
The conquest of Douma would underline Assad's unassailable position in the conflict that mushroomed out of protests against his rule seven years ago.