Ukrainian forces lost up to 150 military in the area under the responsibility of Russia's Sever Group of Forces in the past 24 hours, the statement read.
"As a result of active actions, the units of the Sever Group of Forces liberated the town of Staritsa in the Kharkov region and continued to advance into the depth of the enemy's defense," the ministry said in a statement.
The grouping also repulsed four counterattacks by the Ukrainian forces.
Ukrainian Losses in 24 Hours
Russia's Zapad (West) Group of Forces has occupied better positions, defeated the Ukrainian forces and repelled their counterattack in the past 24 hours, with Kiev losing up to 270 soldiers as a result, the Russian Defense Ministry said on Saturday.
Kiev's losses in the area also include armored combat vehicles, two pickup trucks, a 155 mm US-made M777 howitzer, two 152 mm D-20 howitzers and a 122 mm Gvozdika self-propelled artillery unit, the ministry said.
In addition, the Russian troops repelled a counterattack by the assault group of the 63rd mechanized brigade of the Ukrainian armed forces near the village of Dibrova in the Lugansk People's Republic, the ministry added.
The Ukrainian military has lost up to 155 troops over the past 24 hours in the battlefield area under the responsibility of Russia's Vostok (East) Group of Forces, the Russian Defense Ministry added.
"The units of the Vostok Group of Forces took more favorable positions and hit the manpower and equipment of the 58th motorized infantry brigade of the Ukrainian army and the 128th territorial defense brigade in the areas of the villages of Urozhaynoe and Staromayorskoe of the Donetsk People's Republic … The Ukrainian military lost up to 155 troops," the ministry said in a statement.
The Russian forces have also destroyed two infantry fighting vehicles, two vehicles, a US-produced 155 mm M198 howitzer, and a 122 mm self-propelled artillery installation in the area, the statement read.
The grouping also repulsed four counterattacks by the Ukrainian forces in several areas.