"This outrageous attack, the deadliest in Idlib so far this year, targeted the village of Zardana overnight while people were breaking the Ramadan fast". Rescue work was underway to find survivors from under the ruins, the report said.
The Islamic State group used at least 10 suicide bombers on Friday in a massive attack on Albu Kamal, in which they retook parts of the eastern Syrian town, a monitor said.More news: Gmail for Android is Finally Going to Let You Customize Swipe Actions
Half a dozen men in civilian clothes helped carry a person in a black body bag away from the site of the strikes, which pulverized several buildings.
The northwestern Idlib region remains the largest populated area of Syria in the hands of rebels fighting the government of President Bashar al-Assad.
"The area where this attack took place is part of a de-escalation zone agreed on by Russia, Iran and Turkey past year at peace talks in Astana". At least 92 extremist fighters were killed during that same period.More news: Dead Or Alive 6 announced with 2019 release date
IS in 2014 proclaimed a cross-border "caliphate" in Syria and neighbouring Iraq, but has since lost most of that territory to separate offensives by Russia-backed regime troops and a US-backed Kurdish-Arab alliance.
Hundreds of thousands of civilians have been killed since the war's outbreak in 2011, mostly by the regime and its powerful allies.
On Thursday, IS jihadists also killed 22 pro-regime fighters in surprise attacks in the southern province of Sweida, a monitor said.More news: Trump's top economic adviser accuses Trudeau of back-stabbing after G7 summit