He also noted that Russian engineering units had increased the mining area.

Read alsoFSB mulling new provocations against Ukrainians: fears spread in Moscow of "Ukrainian sabotage groups""On December 13-14, the military of the so-called '1st army corps were spotted laying minefields, using MON-100 mines and KPOM-type cluster mines without drawing up mining schemes," Motuzianyk said.

As UNIAN reported earlier, Russia's hybrid military forces attacked Ukrainian army positions in Donbas eight times in the past 24 hours. The number of attacks has reduced in the area of the Anti-Terrorist Operation, compared to previous days. Fortunately, no Ukrainian soldiers were killed or wounded in action over the past day. 

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