The key eastern Ukrainian city of Bakhmut continues to be one of the main directions for Russian attacks and "everything is being done" to prevent Russian forces from blocking the movement of Ukrainian units, Serhii Cherevatyi, spokesperson for the eastern grouping of the Ukrainian Armed Forces, said during an interview on Ukrainian television on Tuesday. 

"Bakhmut continues to be one of the main directions of the enemy's attack – they’ve hit our positions there with cannon and rocket artillery 197 times, and there were 42 combat encounters. The enemy got significant losses in personnel during the last 24 hours: 277 enemies were killed, 258 were injured to varying degrees," Cherevatyi said.

CNN is not able to independently confirm the number of sustained casualties. 

When asked whether the Russians have been able to cut off the transport artery to Bakhmut, Cherevatyi replied "not yet."

When asked to comment on reports about a Russian offensive north of Bakhmut in the Lyman direction, Cherevatyi said Russian forces "do counteroffensive in this direction from time to time" and that he "can’t say it’s a big offensive operation."

"They are moving there — their motorized rifle units and artillery — first of all, to hold the line there, and secondly, as I said, to regain an advantage. In particular, during the last 24 hours in Bilohorivka and Novoselivske the enemy did a counteroffensive, but they were repulsed and pulled back," he said.