Several people have been wounded, the source said.
"Some 2,000 – 2,500 civilians who wanted to use the corridors and flee eastern Aleppo gathered in Bustan al-Qasr. Al-Nusra [Front] militants opened fire and did not allow them to leave. Several people were wounded," the source said.
Russian Defense Minister Sergei Shoigu declared on Tuesday that an eight-hour pause in Russian and Syrian airstrikes would be observed starting early Thursday to allow aid agencies bring lifesaving aid to Aleppo and evacuate the sick and the wounded. On Wednesday, it was extended by three hours.
A total of eight humanitarian routes have been opened to allow people escape the besieged city – six are intended for civilians and two for militants willing to lay down their arms.
