The Azeri army has entered Agdam, a district that has been under Armenian control for almost thirty years.
It is one of three areas Armenia has to hand back as part of a peace deal to end six weeks of fighting over the disputed region of Nagorno-Karabakh.
The other two districts are to be returned by December 1.
While Azeris celebrate, Armenians are grieving the loss of land they have long claimed as their own.
Al Jazeera’s Hoda Abdel Hamid reports from from Lachin, Nagorno-Karabakh.