Photo from UNIAN

Read alsoUkrainian army's casualties in past day: One soldier killed, two wounded in Donbas

"In the Luhansk sector, the militants fired grenade launchers and heavy machine guns at the Ukrainian fortified positions near the villages of Troyitske, Luhanske and Novozvanivka," the press center of the headquarters of Ukraine's military operations reported on Facebook on Monday morning.

In the Donetsk sector, the Russian-led forces attacked Ukrainian troops near the village of Verkhniotoretske, using heavy machine guns and small arms.