The Regional Prosecutor's Office of Kharkiv released a video showing the moment a Shahed drone struck an administrative building in the city center on Monday.

The footage captured debris flying into the air after the impact, and people running from the scene.

According to officials, four people were injured in the strike.

Regional governor Oleh Syniehubov said the drone targeted a busy central street with a market operating nearby.

“Obviously, the goal was to hit the maximum number of civilians,” Syniehubov said.

The attack damaged the roof and one of the floors of a two-story administrative building.

Meanwhile, Russian forces bombarded the southern Ukrainian city of Zaporizhzhia with rockets overnight, wounding 13 people, including two children, officials said Tuesday, as President Volodymyr Zelenskyy urged European leaders to make the continent safe by building an ambitious air defense umbrella.

With the war grinding on since Russia’s full-scale invasion of its neighbor more than 3½ years ago, there has been no let-up in Russian strikes on civilian areas of Ukraine and its army’s push on the roughly 1,000-kilometer (620-mile) front line.

A peace settlement appears to be no closer despite months of U.S.-led peace efforts. U.S. President Donald Trump’s ultimatums and deadlines for Putin to engage with proposals to stop the fighting have passed without obvious consequences.