Militants attacked Ukrainian army positions 36 times over the past day, using, in particular, weapons prohibited by the Minsk agreements, the anti-terrorist operation staff's press center has said.

"Pro-Russian armed gangs have markedly intensified its activity in the Donetsk area. Our positions near Avdiyivka and Krasnohorivka came under intense fire from its outskirts and suburbs, by use of small arms, grenade launchers and 82mm and 120mm mortars," the press center wrote on Facebook on Monday.

According to the report, militants fired various types of grenade launchers and small arms on Ukrainian army strongholds.

A sabotage-and-reconnaissance group attempted an incursion into the Ukrainian army's rear near Opytne in the Donetsk airport area with the support from grenade launchers, anti-aircraft guns and 82mm mortars. "The saboteurs were timely detected. There was a clash, and the attackers retreated," the press center said.

The hostiles attacked Ukrainian army positions near Zaitseve in the Horlivka-Svitlodarsk bulge, using automatic mounted grenade launchers and 82mm mortars. Militants fired small arms and grenade launchers on Ukrainian army strongholds near Luhanske, Donetsk region.

On Sunday, the staff observed at least three attacks on Ukrainian army positions in the Mariupol sector, using various types of grenade launchers, large-caliber machineguns and small arms.

Militants also became active in Luhansk region. According to the report, they were firing on Ukrainian army positions near Schastia, using automatic mounted grenade launchers and large-caliber machineguns.

The press center reported the ongoing attacks of the militia on Monday, after midnight. Militants used weapons prohibited by the Minsk agreements, including 120mm mortars, 122mm artillery systems and tanks, near Avdiyivka.

Besides, the hostiles shelled Ukrainian army positions near Novotroitske, Taramchuk and Hranitne in the Mariupol sector. They were also using 82m and 120mm mortars in those areas.