A spokesman for the Ukrainian army's operation in eastern Ukraine says government forces killed 150 militants near the town of Mykolayivka, outside of Slovyansk in Donetsk region.
Oleksiy Dmytrashkivskiy said one Ukrainian soldier was killed and another four injured in the fighting, which began on the evening of July 3 and was aimed at sealing off the town.
Separately, residents of Donetsk city report hearing sounds of fighting involving heavy artillery overnight.
A city administration spokesman told reporters the fighting was near the villages of Peski and Karlivka.
Meanwhile, the head of the separatist Luhansk People's Republic,Valery Bolotov, has dismissed his administration.
A statement on the self-declared republic's website said Bolotov had appointed Marat Bashirov as his acting prime minister, and Dmytro Semenov and Vasyl Nikitin as acting first deputy prime ministers.
No reasons for the dismissal of the former administration were given.
Ukraine penalizes Russian airlines for flights to Crimea
Occupants continue to "bury" imported products in Crimea
Turkey continues to advance into Syria and Iraq
2016 Sakharov Prize winners named
Argentine Ambassador issued a statement on Crimea and Donbas
Ministry of Justice: Lustration is almost complete
Russia provided new data on downed Boeing
Ukrainian MFA protests against Putin's visit to Crimea
MFA compares trial of Chiygoz with Stalinist repression
School with children bombed in Syria
Hayser Jemilev denied early release
Ankara: The evidence to arrest Gulen is sufficient
Putin promised Crimeans ‘pipe & different life’ at year-end
NATO Ex-official: Putin feared in vain and annexed Crimea
NATO: Russia funding separatists in Eastern Ukraine
Turkish food entering Ukrainian market
WorldFood Ukraine gathers 125 companies from 13 countries
Ukrainian military to take part in US Marine Corps Marathon
Occupants fined Mejlis member in Crimea
Occupants try to show the scale of terrorism in Crimea
Kiev does not intend to leave demarcation line in Donbas
ATO Digest: Mariupol direction under fire
EU strengthens sanctions against RF with 5 countries
Sebastopol streets are swamp with litter
UK to deploy battalion with armored vehicles in Estonia