The main rebel group in southern Syria says it is negotiating with a United Nations delegation about ceasefire, aid and the evacuation of urgent medical cases.

Reports estimate that approximately 50,000 people had left the southern pocket of eastern Ghouta in the past 72 hours and that thousands had left on Sunday.

Wael Alwan,the Istanbul-based spokesman for the rebel group Failaq al-Rahman, states the group is in serious negotiations to guarantee the safety and protection of civilians.

The Syrian Observatory for Human Rights says the Syrian government is now in control of more than 80% of the area, which has been a rebel stronghold since 2012.