"Trucks with ammunition – 10-15 vehicles per day – arrive in Horlivka. Armored vehicles (four BMP-1, BMP-2 infantry fighting vehicles and two MT-LB light multi-purpose armored towing vehicles in one day) have also been spotted," he wrote on Facebook on Friday.

"The mercenaries have also deployed a reinforced company with armored vehicles near the village of Kruta Balka in Yasynuvata district (8-9 armored fighting vehicles, mainly MT-LB-type ones, as well as several armored personnel carriers and infantry fighting vehicles, one BRDM-2 amphibious armored patrol car), as well as mortars – from five to six 82mm mortars and two 120mm mortars. The battery of MT-12 100mm anti-tank guns has also been spotted in that area (disguised in the private sector)," Tymchuk said.