Medical staff working in Syria's rebel-held Eastern Ghouta say they are treating patients with breathing problems after a suspected chlorine attack.
The report comes as the Syrian regime resumed air strikes and shelling, just hours after an aid convoy left the area following a five-hour truce
The Syrian Civil Defense reported 30 cases of suffocation in the town of Hammoria. Damascus has denied responsibility for the attack.
This week’s aid convoy was the first to reach the town of Douma since the government intensified efforts to retake the area in recent weeks.
The 46-truck convoy left when shelling resumed, without fully unloading supplies.
Russia has offered rebels and civilians safe passage out of the area, but activists say it is an effort to displace the population.