Kyiv hits Russian ammo depot

Moscow says its forces make advances in east

Ukraine's security services said Saturday they had struck a Russian ammunition depot in a border region, as Moscow's forces claimed yet another advance on the battlefield.

Ukraine also said it had thwarted a "massive" overnight Russian aerial attack that saw drones launched towards the capital Kyiv.

The attacks come after a week of intense Russian bombardments across Ukraine that killed at least 55 in the central city of Poltava, and seven in Lviv - hundreds of kilometres from the front lines and close to Ukraine's western border with EU and NATO members.

A large fire and several explosions were reported overnight in the Russian region of Voronezh, which borders Ukraine, prompting officials to evacuate locals living near the blaze.

Russian anti-air defence systems "detected and neutralised a drone" early on Saturday morning over the western part of the region, under 150 kilometres (90 miles) from Ukraine, Voronezh governor Alexander Gusev wrote on Telegram.

"No one was injured," but when the drone fell it sparked a large fire "that spread to explosive devices and caused them to detonate", Gusev continued, without providing details of which facility was hit.

"A decision was taken to evacuate residents of a village" because of the blaze, he said.

Russian Telegram channels said the fire broke out in a local munitions depot.

Ukraine's SBU security services later claimed it had hit a Russian ammunition depot.

A source in the SBU told AFP that Kyiv was targeting "military airfields, ammunition depots and infrastructure facilities" in order to "create a demilitarised zone in the regions of Russia adjacent to Ukraine".

It called them all "legitimate targets". Ukraine's air force said Russia fired 67 drones at the country overnight, adding that it shot down 58 of them.