President Volodymyr Zelensky announced on May 10 that Russian forces had begun a new offensive operation, targeting Kharkiv Oblast.
"Russia began a new wave of offensive actions in this (Kharkiv's) direction. Ukraine met them (Russian forces) there with our troops, brigades, and artillery," Zelensky said during the press briefing with Slovak President Zuzana Caputova in Kyiv.
Moscow recently intensified attacks against Kharkiv amid reports that Russia might plan to attack Kharkiv as part of a wider offensive in the coming months.
The Defense Ministry earlier in the day reported that the Russian military attempted a breakthrough of Ukraine's line of defense in Kharkiv Oblast.
Zelensky said that Russian troops could mobilize assault units further in the region. The president added that the Ukrainian command had known about a potential offensive in this direction and had been preparing.
"Now, there is a fierce battle going on in this (Kharkiv's) direction," Zelensky said.
As of 1:30 p.m. local time, at least two people were killed, and five were injured amid intense Russian attacks.
Russian forces attempted to break through Ukrainian defense lines at around 5 a.m. local time, according to the Defense Ministry.
The Russian attack has been held off, but the battles of varying intensity have continued, as the ministry's statement read.
Kharkiv Oblast Governor Oleh Syniehubov said earlier the attack "does not pose a threat" to the regional center of Kharkiv, Ukraine's second-largest city.
Russian forces failed to take Kharkiv in the first weeks of the full-scale invasion despite the fact the city lies less than 30 kilometers from the Russian border.