Free Syria Army soldiers leaving Aleppo
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Free Syrian Army soldiers head to Azaz

20 September 2013 Last updated at 17:03 BST

Rebel fighters associated with the Free Syria Army appear to have left Aleppo for Azaz where a ceasefire between the group and a rival rebel organisation has been called.

The Islamic State in Iraq and Syria had seized Azaz from the Western-backed Free Syrian Army, and had raised fears of a war within a war.

This footage was posted on the internet and is believed to be genuine, but because of its source and nature cannot be completely verified.