"What France demands is the presence of observers of the United Nations on the ground to have a guarantee that the evacuation, which is a priority for the civilians, [takes place], but also so that militants are not massacred," Ayrault told the France 2 television channel, as quoted by Les Echos newspaper.
Earlier on Wednesday, the United Nations reportedly said it was not involved in evacuations.
Over the recent months, Aleppo became a major battleground in Syria between government forces and militants. On Tuesday, the Russian reconciliation center said that the Syrian army was controlling over 98 percent of the territory of the embattled city, with militants present in less than 3 square kilometers (1.1 square mile).
According to the reconciliation center’s Wednesday statement, almost 6,000 civilians were evacuated, while 366 militants laid down their arms in the past 24 hours in Aleppo.