Photo from Ukraine's Defense Ministry

The weapons used by Ukrainian troops to repel the attack are not banned under the Minsk peace agreements, the ATO HQ said on Facebook in an update as of 18:00 local time on January 10.

Read alsoUkraine says Christmas truce in Donbas lasted almost a day"Units of the Russian occupation forces continue to disregard the ceasefire agreed for the New Year and Christmas holidays and shell strongholds of the Armed Forces of Ukraine, using proscribed mortars," the ATO HQ said.

The hot spot in the Luhansk sector is the Svitlodarska Duha buldge. In particular, the enemy lobbed over thirty 120mm and 82 mm mortar shells into areas near the Ukrainian-controlled village of Novoluhanske. Militants actively used automatic grenade launchers and large-caliber machine guns near that village.

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What is more, Ukrainian troops that are defending the village of Luhanske repeatedly came under 82mm mortar fire in the daytime.

The enemy also attacked Ukrainian positions outside the village of Verkhniotoretske in the Donetsk sector, using grenade launchers.