Syrian observatory
Syrian Observatory: bombing kills 94 in eastern Ghouta in a day
Air strikes, rocket fire and shelling on the besieged suburbs of Damascus also wounded another 325 people, the Syrian Observatory for Human Rights said.
There was no comment from the Syrian army on the report that Qaryatayn, 120 km northeast of Damascus, had fallen.
But subsequently rebel groups launched an offensive spearheaded by suicide-bombers from the jihadi Tahrir al-Sham alliance.
The death toll at the camp near the town of Sarmada is expected to rise.
The Syrian Observatory for Human Rights says rebel rockets killed 19 people in government-held territory.
The Syrian government is due to hold parliamentary elections in state-held parts of the country on Wednesday.
The Syrian army said the jet was shot down with an anti-aircraft missile.
The five-year-old conflict between the government and insurgents has killed more than 250,000 people.
The war has killed 250,000 people, displaced millions and created Europe’s worst refugee crisis.
Security officials say border crossings controlled on Syrian side are being used as a conduit for supplies.
A man calling himself Abu Hamed passed the files to Sky News on a memory stick stolen from head of security.
The opposition said violations would undermine efforts to guarantee the continuation of the truce.
The cessation of hostilities agreed to by the US and Russia is due to take hold on Saturday from midnight.
The US says ending the conflict in Syria could allow parties to focus on the fight against Islamic State.
Turkey accused Russia on Monday of an obvious war crime after missile attacks in northern Syria.
Almost 50 civilians were killed when missiles hit at least five medical facilities & two schools on Monday.
Opposition delegates met in Geneva with UN envoy, who said this session marked the official peace talks.
UN envoy had invited the Syrian government and an opposition group to Geneva for proximity talks.
A Syrian opposition council said on Wednesday it will not attend the negotiations in Geneva.