"The planes of Russia’s aviation group in Syria made 46 sorties against 83 infrastructure facilities of the IS terrorist organization over the past 24 hours," Konashenkov said.
The planes hit targets in the provinces of Idlib, Aleppo, Deir ez-Zor, Damascus, Hama, he said.
A facility of the Jabhat al-Nusra group housing a plant manufacturing radio-controlled demolition bombs and also a warehouse with explosive substances was destroyed near Aleppo, he said.
Two nearby trucks that delivered dozens of tons of explosives were also destroyed, he said.
A field camp of the Jabhat al-Nusra group was also found during the aerial reconnaissance in the town of Khan Shaykhun in the Al-Ghab plain.
"The airstrike of Su-25 fighter jets on this facility with its infrastructure - these are places for accommodating gunmen, warehouses and vehicles of terrorists - was destroyed," Konashenkov said.
According to the spokesman, "on October 19, intercepted radio exchanges provided information about the planned gathering of the leaders of armed groups" operating in the area of Sarmin. Konashenkov noted that "after additional verification of this information through other channels, identifying the time and place of the meeting, a decision was made to carry out a strike on the site of gathering of terrorist leaders."
In addition to that, the drone surveillance of the site - the basement of an abandoned building - was organized, Konashenkov said.
"Last night, nine high-traction vehicles equipped with heavy machine guns were registered in the area. Su-34 bombers delivered a surgical strike on this facility using the KAB-500 guided air bombs, destroying the target," he added.