Russian-backed separatists have fired at the positions of the Ukrainian Armed Forces 21 times over the past 24 hours, including four times with the use of weapons banned by the Minsk agreements, with no casualties recorded among Ukrainian military, the press center of the Joint Forces Operation (JFO) headquarters has said.

"Invaders opened fire on the positions of our troops 21 times, including four times with the use of weapons proscribed by the Minsk agreements [...] There are no casualties among the personnel of the Joint Forces," the JFO HQ said in a report on its Facebook page early on Tuesday.

In the past day, militants attacked Ukrainian positions near Krymske, Zolote, Novozvanivka, Luhanske, Zaitseve, Pisky, Krasnohorivka, Novomykhailivka, Novotroitske, Starohnativka, Hnutove, Vodiane, Lebedynske, and Shyrokyne.

According to Ukrainian intelligence, four militants were killed and six were injured in the past day.