KYIV: Thousands more civilians have fled Russia鈥檚 renewed ground offensive in Ukraine鈥檚 northeast that has targeted towns and villages with a barrage of artillery and mortar fire, officials said Sunday.

The intense battles have forced at least one Ukrainian unit to withdraw in the Kharkiv region, capitulating more land to Russian forces across less defended settlements in the so-called contested 鈥済ray zone鈥� along the Russian border.
Meanwhile, a 10-story apartment block collapsed in the Russian city of Belgorod, near the border, with several deaths and injuries reported. Russian authorities said the building collapsed following Ukrainian shelling. Ukraine has not commented on the incident.

At least 4,000 civilians have fled the Kharkiv region since Friday, when Moscow鈥檚 forces launched the operation, Gov. Oleh Syniehubov said in a social media statement. Heavy fighting raged Sunday along the northeast front line, where Russian forces attacked 27 settlements in the past 24 hours, he said.
Analysts say the Russian push is designed to exploit ammunition shortages before promised Western supplies can reach the front line. Ukrainian soldiers said the Kremlin is using the usual Russian tactic by launching a disproportionate amount of fire and infantry assaults to exhaust their troops and firepower.
It comes after Russia stepped up attacks in March targeting energy infrastructure and settlements, which analysts predicted were a concerted effort by Moscow to shape conditions for an offensive.
Ukrainian President Volodymyr Zelenskyy said that disrupting Russia鈥檚 offensive in the area was a priority, and that Kyiv鈥檚 troops were continuing counteroffensive operations in seven villages around the Kharkiv region.
鈥淒isrupting the Russian offensive intentions is our number one task now. Whether we succeed in that task depends on every soldier, every sergeant, every officer,鈥� Zelenskyy said.
The Russian Defense Ministry said Saturday that Moscow鈥檚 forces had captured five villages on the border of Ukraine鈥檚 Kharkiv region and Russia. These areas were likely poorly fortified due to the dynamic fighting and constant heavy shelling, easing a Russian advance.
Ukraine鈥檚 leadership has not confirmed Moscow鈥檚 gains.