Paulo Sergio Pinheiro said most of the victims in the attack were killed with conventional and not chemical weapons during an airstrike on a hospital.
The last rebels in the town of Zabadani near Damascus in Syria have either departed for insurgent-held regions or accepted government rule.
Hundreds more American soldiers join the battle against ISIL militants in Syria
Palmyra has been re-taken from ISIL, but booby traps left by the Islamist militants means residents have been reluctant to return.
With all the protagonists in the Syrian conflict facing each other in al-Bab, anti-ISIL forces are struggling to maintain unity as they attempt to retake the town from the Islamic militants.
ISIL stronghold of Al-Bab is surrounded, a monitoring group says. The UN issues a report claiming the jihadist group is 'militarily on the defensive.'
Days before the start of talks on the Syria conflict in the Kazakh capital Astana, fighting continues in a number of places.
The United Nations Security Council has unanimously adopted a resolution welcoming a ceasefire in Syria brokered by Russia and Turkey.
Just hours before a ceasefire came into effect in Syria, amateur footage captured the terrifying aftermath of an airstrike on a school in the rebel-held area of Arbin, Damascus, which is reported to h
Syria, Russia and Turkey have declared that a ceasefire will come into effect at midnight on Thursday in Syria - but it won't include Islamic state or a group which once had links to al-Qaida.
An independent Syrian media activist has made a call on social media this week for the rest of the world to "stand with Aleppo"
Syrian forces claim victory over rebels in Aleppo is imminent as the US and Russia differ over truce talks
The battle for Aleppo has reached its end, the Syrian Observatory for Human Rights monitoring group said on Monday, marking a devastating blow for the rebellion against President Bashar…
Syrian government forces now control more than 95 percent of Aleppo, the Russian Defence Ministry was quoted as saying on Monday.
A Syrian military source said the army and its allies had captured the al-Asila and Aaajam districts southeast of Aleppo's ancient citadel.
There are conflicting reports over whether the Russian-backed Syrian government has halted its military push to retake the rebel-held eastern Aleppo.
The move comes amid strong international criticism over the failure to secure aid for civilians, as the Syrian army closes on the last rebel-held areas of Aleppo.
Rebel-held territory in eastern Aleppo has been split in two after Syrian government forces captured the key district of al-Sakhour.
Activists are blaming government forces for the shelling in a rebel-held district of the Syrian capital, which reportedly happened during morning playtime.
This is the moment rescuers saved a boy left hanging precariously after more bombing in besieged Aleppo.
The prophesied “apocalyptic battle” for Dabiq did not come to fruition as Turkey-backed Syrian rebels rout ISIL from the village The ISIL stronghold near the Turkish border in northern Syria has been
Since 2013 volunteer rescue workers in the White Helmets organisation have been trying to save lives in the Syrian civil war. But Moscow and Damascus accuse them of being close to terrorist groups, an
There has been no let up in the battle for Aleppo and surrounding areas.
A nationwide ceasefire agreement in Syria brokered by Russia and the United States has come into effect.
An alleged chlorine gas attack on the Syrian city of Aleppo is said to have led to dozens of people including children being treated in hospital for suffocation.
Both rebels and government troops are sending in reinforcements to Aleppo as the long battle for Syria’s second city intensifies.