The Syrian government suspended the evacuation of civilians and fighters from the last rebel-held parts of Aleppo on Friday, leaving thousands of people trapped and uncertain of their fate.

Russia, which helped to broker the deal with Turkey, said its operation was now 'complete' with all women and children moved from the city, AFP reported.

Ankara and a Syrian military source said the evacuation had been suspended but was not yet over.

"The evacuations are not over and many people still want to leave the area," said Turkish Foreign Minister Mevlut Cavusoglu.

The delicate operation to bring the last civilians and rebels out of east Aleppo began on Thursday and had continued overnight, with thousands of people leaving in buses and ambulances.

But on Friday it was abruptly suspended, with the government accusing rebels of violating the terms of the accord.

"The evacuation operation has been suspended because the militants failed to respect the conditions of the agreement," a security source told AFP.

State television said: "The terrorist groups violated the agreement and tried to smuggle heavy weapons and hostages from east Aleppo."

The International Committee of the Red Cross, which has supervised the evacuation, confirmed it was on hold.

The opposition accused the government of suspending the operation in a bid to secure the evacuation of residents from two villages under rebel siege. -- AFP