Illegal armed formations in Donbas opened fire on Ukrainian military positions 85 times in the past 24 hours, the press center for the Anti-Terrorist Operation headquarters said on Facebook on August 1.According to the press center, the militants used 152 mm and 122 mm caliber heavy artillery in the Donetsk sector. In the the Mariupol sector, mortars of various caliber were used on Shyrokyne and Maryinka. In the Luhansk sector, the Ukrainian positions in the area of Novotoshkivske came under fire from 82 mm mortars and grenade launchers, the report said.