Officials say a Ukrainian drone has struck an industrial plant deep inside Russia, injuring several people and causing a fire.

Russian forces have launched more than 500 aerial weapons at Ukraine overnight, Kyiv said on June 29, describing the attack as the biggest air strike on the country since the war began.

Russia launched its biggest aerial attack against Ukraine overnight, a Ukrainian official said Sunday, part of an escalating bombing campaign that has further dashed hopes for a breakthrough in efforts to end the 3-year-old war.