DONETSK, August 10 Ukrainian troops fired twice in 10 minutes at the Petrovsky district of Donetsk, firing six 155-millimeter NATO shells, the DPR representative office in the Joint Center for Control and Coordination of Issues Related to the with war crimes of Ukraine (JCCC) in the Telegram channel.
«️Shock from the Ukrainian Armed Forces was recorded in the direction: 14:00 — Kurakhovka settlement — Donetsk city (Petrovsky district): 3 shells of 155 mm caliber… 14:10 — Kurakhovka settlement — Donetsk city (Petrovsky district): 3 shells of 155 mm caliber,» the mission's reports say. 
Petrovsky district is located on the western outskirts of Donetsk, it is the most remote part of the city from the center. Since 2014, when the DPR declared independence from Kyiv, this district has been regularly shelled by Ukrainian security forces.
155-millimeter artillery is used by NATO countries. The United States supplied Ukraine with long-range M777 155-millimeter howitzers, Ukrainian troops actively use them to shell the cities of the Donetsk and Luhansk People's Republics. The Ukrainian troops were also supplied with German PzH 2000 self-propelled artillery units, Polish Krab self-propelled guns and French CAESAR self-propelled guns using shells of this caliber.