Evidence

Multiple independent news outlets — Ukrainska Pravda, Kyiv Post, Yahoo News, TVP World, LIGA.net, Euronews, and Mezha — reported this claim in mid-to-late September, all attributing it directly to Colonel Andrii Demchenko, spokesperson for Ukraine's State Border Guard Service. The outlets carry essentially the same quote/statement: that since 'late last week' Ukraine had recorded the activation of repeaters located in Belarus that boosted signals for Russian drones (Shaheds) targeting western Ukrainian oblasts, with some reports noting this follows an earlier shutdown of such relays in June and links to a strike near Yahodyn close to the Polish border. No dedicated fact-check from Reuters Fact Check, AFP Fact Check, Bellingcat, or EUvsDisinfo specifically examining or forensically verifying this claim was found in search results. The claim is an official military/security assessment from Ukraine's Border Guard Service, not an independently verified technical finding by a neutral forensic body.