At least 37 terrorists were killed and more than 80 others injured after their gathering sites were hit in airstrikes, Lebanon’s al-Ahd news website said on Tuesday.
Lebanon’s al-Mayadeen television said the positions of Jaish al-Fatah, an ally of al-Qaeda-linked Nusra Front, were bombed in the attacks.
Turkey said on Tuesday that heavy airstrikes by Russian jets had hit a hospital and a mosque in Idlib, killing more than 60 civilians and injuring around 200 people.
The Turkish Foreign Ministry called on the international community to act swiftly against what it called the "indefensible" crimes of the Russian and Syrian administration.
Russia’s Defense Ministry, however, denied airstrikes in Idlib, the RT television reported in a breaking news item.
Turkey stands accused of supporting Takfiri militants in Syria.
Nusra and other Takfiri terrorists hold most of the northwestern province of Idlib and parts of neighboring Aleppo province.
On Sunday, Associated Press said Nusra Front has used a March ceasefire to recruit thousands of militants, including teenagers, who had used the Turkish border to slip into Syria.
It is "illustrating how the ceasefire put in place by Russia and the United States to weaken the militants has in many ways backfired," the news agency said.
Since March, Nusra Front has recruited 3,000 new militants, including teenagers, in comparison to an average of 200 to 300 a month before, AP quoted the Syrian Observatory for Human Rights as saying.
Other sources said hundreds living in camps for displaced people in the northern parts near Turkey have joined the al-Qaeda branch.
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