Two Ukrainian servicemen were wounded amid 28 attacks by pro-Russian militants on 30 May, the Joint Forces Operation (JFO) HQ said in the morning update on Facebook.
On nine occasions, the militants used 122-mm artillery, 120-mm and 82-mm mortars banned by the Minsk agreements.
The tensest situation in the Luhansk sector was observed near Krymske and Novotoshkivske. JFO units put up active defence near Zaytseve and Novotroyitske in the Donetsk sector and near Chermalyk and Hnutove near Mariupol.
According to intelligence, two militants were killed and four wounded.