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In particular, from the evening of June 2 the OSCE observers spotted eight tracked armored vehicles, four of which were tanks, as well as a military truck carrying a 122-mm artillery piece.

On the morning of June 3 observers spotted a movement of two T-64 tanks, a column of one BMP-2, three military trucks (one of them was carrying a Zu-23-2 anti-aircraft gun) and two T-72 tanks. In addition, movement of seven T-64 tanks was recorded.

During the day, OSCE drone recorded four Acacia 152-mm self-propelled guns.

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SMM representatives noted that "leadership of DNR" (Donetsk People’s Republic) has refused to comment on the movement of heavy equipment in the area of ​​ Maryinka.

Earlier it was reported that on June 3 Russian-backed militants launched a massive offensive on Ukrainian positions, with the strongest attack on Krasnohorivka and Maryinka, near Donetsk.