Some 350 people were able to leave a opposition-held pocket of east Aleppo late Sunday, a medical official said, though evacuations have officially been postponed.Five buses carrying the evacuees arrived from besieged parts of east Aleppo," said Ahmad al-Dbis, who heads a team of doctors coordinating evacuations to Khan al-Assal, an opposition-held territory from where they can travel on to other parts of Aleppo and Idlib provinces.

The evacuations expected Sunday of opposition fighters and civilians from east Aleppo and two Shiite villages under siege in northwestern Syria has been postponed until further notice, a monitor said.

The Syrian Observatory for Human Rights said the move was decided after gunmen attacked buses sent to evacuate people from the villages of Fuaa and Kafraya and in the "absence of security guarantees for the evacuees".