Rebels in the southern Syrian city of Nawa in Daraa province surrendered to the Syrian government on Wednesday after intensive airstrikes as the army pressed forward with a Russia-backed offensive in the area.

Nawa, in which at least 100,000 people still live, was the largest urban center left in rebel hands in Daraa province, where the offensive launched last month has defeated rebels across a swath of territory near Jordan and Israel.

Rebels had agreed to a "reconciliation" deal with the government on Wednesday under which they would give up the hills around the city and surrender heavy weaponry, a statement from Nawa's negotiation delegation said.