A Ukrainian sabotage group was prevented from infiltrating the border area of Russia's Bryansk region, governor Alexander Bogomaz confirmed on Monday.

"Employees of the Border Department of the Federal Security Service of Russia in the Bryansk Region and units of the Russian Defense Ministry in the border Sevsky District of the Bryansk Region prevented an attempt to infiltrate the territory of Russia by a Ukrainian sabotage and reconnaissance group," Bogomaz said on Telegram.

Foreign weapons and ammunition, abandoned by the Ukraine sabotage group, were found at the site of the clash, the official noted.

This comes shortly after five out of six Ukrainian saboteurs had been eliminated by Russia's FSB, the Federal Security Service, as they attempted to infiltrate Russia through the western Bryansk region bordering Ukraine.

The high cost of war: Ukraine's $100 million daily battle

Earlier on Monday, outgoing Ukrainian Defense Minister Oleksii Reznikov stated that Ukraine is bearing daily costs of $100 million due to the war with Russia, adding that the assistance provided by volunteers since February 2022 has only accounted for 3% of the total funds used.

Reznikov pointed out that when one compares the funds raised by various volunteer foundations and the state's daily spending of $100 million, it becomes apparent how significant the financial burden of the war is. Prime Minister Denys Shmyhal previously stated that Ukraine was using 100% of its tax income for military needs, and aid from donors and allies was also being directed toward the defense sector.

"A day of war costs us $100 million. Now take the budgets of all the respectable large volunteer foundations and see how much they raise. And take the state, which spends $100 million per day in general. Just think about it," Reznikov said, as quoted by the Ukrinform news agency.

This comes just one day after Ukrainian President Volodymyr Zelensky announced that Reznikov had been sacked from his position.

Rustem Umerov, a Crimean Tatar, would be replacing Reznikov, Zelensky also announced. Umerov has been the head of Ukraine's State Property Fund since September 2022 and has been a main driver in some major war negotiations like the Black Sea grain deal.

A few days ago, Zelensky's alleged anti-corruption campaign fueled rumors that he may fire Ukraine's Defense Minister following allegations of misconduct in the procurement of military supplies.

Read more: Western military aid to Kiev since Feb 2022 tops $100bln; half from US