(MENAFN- The Peninsula)
Beirut: Activists accused the Islamic State (IS) group Friday of being behind a deadly gas attack in northern Syria this past summer as the global chemical weapons watchdog confirmed it was mustard gas.
Meanwhile Islamist rebels wrested back a flashpoint town in the central province of Hama reversing the last of gains the army had made in a month-old offensive.
The Organisation for the Prohibition of Chemical Weapons on Friday confirmed with "utmost confidence" that mustard gas was used in August in Syria.
A report from OPCW fact-finding teams said an infant was "very likely" killed in the attack on Marea a town in Aleppo province on August 21.
OPCW said the mustard gas was used by non-state actors but activists and a monitoring group said it was clear that IS was behind the attack.
Rami Abdel Rahman head of the Syrian Observatory for Human Rights monitoring group said "IS used toxic gases during its attack on Marea in August."
He said IS had likely gotten the gas through Turkey or Iraq.
Journalist Maamun al-Khatib who was in Marea at the time said: "We knew it was IS because all the shells were being fired east of Marea and that area is totally under the control of IS."
IS has attacked Marea for months in an effort to cut off a supply route into the country from Turkey.
For activist Nizar al-Khatib OPCW's report "comes too late and isn't enough because it doesn't identify IS as the one responsible for firing the mustard gas."
Rebels reverse regime gains
Doctors Without Borders (MSF) which operated a nearby field clinic treated four members of a single family for "symptoms of exposure to chemical agents."
The Marea residents told MSF they saw a "yellow gas" when a mortar round hit their house.
An MSF spokesman said Friday that the Paris-based group did not have enough evidence to finger IS.
The OPCW report also said toxic chemicals including chlorine were used in an attack in March in the northwest province of Idlib.
Six people including three young children were killed in an apparent chlorine attack in the village of Sarmin in Idlib province on March 17 the Observatory and activists said.
After a chemical attack that killed hundreds in the Eastern Ghouta region east of Damascus in August 2013 Syria agreed to declare and hand over its chemical weapons in a deal overseen by OPCW.
Meanwhile Islamist fighters including Ahrar al-Sham seized a town in Hama province rolling back a series of recent gains by the beleaguered armed forces of Damascus.
Ahrar al-Sham and allied rebels overran Atshan and nearby villages in the morning and despite Russian air support the army was unable to push them back the Observatory said.
Russian warplanes had been key to the army's gains in the offensive it launched in Hama on October 7 one of several ground assaults across Syria backed by Moscow.
The government captured Atshan on October 10 but withdrew from it and nearby towns including Umm al-Haratayn on Friday.
"Regime forces lost control of the last remaining towns it had seized since the beginning of its ground operations in the northern parts of Hama province" Observatory chief Rami Abdel Rahman said.
TOWS against tanks
The setback comes a day after the army lost the towns of Morek and Tal Skeik to jihadists and other rebels.
The loss of Morek cost the army the last town under its control along the main highway north from Hama to second city Aleppo.
Morek has changed hands several times in Syria's four-year civil war. Government troops last retook it in October 2014.
The army still controls swathes of territory south of the town but is facing a fierce fightback from rebels using US-made TOW anti-tank missiles.
According to the Revolutionary Forces of Syria Media office which publishes news on opposition military developments rebel groups across Syria destroyed at least 123 army tanks in October alone using TOW missiles.
More than 250000 people have died in Syria's conflict which several rounds of diplomatic pushes have failed to end.
On Friday Saudi Foreign Minister Adel al-Jubeir held talks in Oman a traditional mediator on the region to seek a solution to the war.
And UN envoy for Syria Staffan de Mistura who will go before the Security Council next week to report on peace efforts after trips to Moscow and Damascus met Friday with the head of Syria's opposition National Coalition Khaled Khoja.
AFP