Air strikes on a village in Syria's rebel-held Idlib province killed at least 44 people overnight, the highest death toll in a single attack on the region this year, the Syrian Observatory for Human Rights said on Friday.
The monitoring group said Russian war planes probably carried out the attacks. The Russian Defense Ministry later denied its war planes were involved, according to Russian news agencies.
Russia is Syrian President Bashar al-Assad's main ally in his war against an armed opposition, now in its seventh year.
The Observatory said the jets targeted the village of Zardana in northern rural Idlib overnight, killing 27 men, 11 women and six children.
The death toll is expected to increase, since some of the 60 injured in the strikes were in a critical condition, the Britain-based Observatory said. Rescue workers were still searching the rubble for survivors.
The Russian ministry was quoted as saying it had information about fighting between Nusra Front militants and opposition fighters involving heavy artillery fire in the past 24 hours.
The Observatory had reported on Wednesday night violent clashes in the village between local factions, but later said the destruction and resulting casualties were due to air strikes.
Idlib, a region in northwestern Syria, remains the largest populated area of the country in the hands of insurgents fighting the Damascus government.
In recent years, tens of thousands of fighters and civilians have fled there from parts of the country the army has recaptured with the help of Russia and Iran.
A Message from The Moscow Times:
Dear readers,
We are facing unprecedented challenges. Russia's Prosecutor General's Office has designated The Moscow Times as an "undesirable" organization, criminalizing our work and putting our staff at risk of prosecution. This follows our earlier unjust labeling as a "foreign agent."
These actions are direct attempts to silence independent journalism in Russia. The authorities claim our work "discredits the decisions of the Russian leadership." We see things differently: we strive to provide accurate, unbiased reporting on Russia.
We, the journalists of The Moscow Times, refuse to be silenced. But to continue our work, we need your help.
Your support, no matter how small, makes a world of difference. If you can, please support us monthly starting from just $2. It's quick to set up, and every contribution makes a significant impact.
By supporting The Moscow Times, you're defending open, independent journalism in the face of repression. Thank you for standing with us.
Remind me later.