The death toll in the suspected chemical attack in a rebel-held town in northwestern Syria has climbed to 58, according to a monitoring group
An unconscious Syrian child is carried at a hospital in Khan Sheikhun, a rebel-held town in the northwestern Syrian Idlib province, following a suspected toxic gas attack.
Reports said at least 21 children were killed in the attack, although it has not been independently confirmed.
The Syrian Observatory for Human Rights said those killed had died from the effects of the 'gas', adding that dozens more suffered respiratory problems and other symptoms.
Russia's military has denied reports its planes carried out any strikes near the town of Khan Sheikhun in Syria.