"We have seen some reports about a ceasefire arrangement brokered, reached between Russia and Turkey that we are given to understand could take effect imminently," Kirby stated. "If it is true, and there has been a ceasefire arrangement reached that not only stops the bombing and the violence but allows people to safely leave Aleppo, we would welcome that."
Earlier on Tuesday, the Turkish Foreign Ministry said in a statement that a ceasefire had been reached in eastern Aleppo as a result of negotiations between representatives of the Russian military and the Syrian opposition.
Kirby said the United States was not able to confirm the reports about a ceasefire and US officials have seen no evidence that a cessation of hostilities had taken effect.
According to the Turkish ministry's statement, civilians and then groups of armed opposition would be evacuated in the direction of the town of Idlib, southwest of Aleppo.