Polish airspace, including Warsaw's Modlin and Chopin airports, experienced disruptions between 1:15 AM and 1:30 AM UTC on September 10th, 2025, due to "unplanned military activity related to ensuring state security." During this period, at least one drone was reported crossing the border from Ukraine's Volyn region into Poland, heading west, according to monitoring channels. This activity prompted the deployment of Polish military aircraft, including an airborne early warning aircraft operating near Lublin. The airborne early warning aircraft, identified as #MM62293/#33FDC2 operating as #PERSE71, was positioned 15 nautical miles northeast of Lublin and was scheduled to remain on task until 04:50 UTC. Its movement back from the Ukrainian border was noted, providing a clearer view of Polish airspace, according to Osinttechnical. Onet News Agency, Poland's largest online news platform, initiated a live blog detailing "disturbing reports regarding Russian drones" and the subsequent scrambling of fighter jets. Monitoring channels reported a continued pattern of drone movements across Ukraine and into Poland. Specifically, 10 UAVs were reported moving from the Kyiv region to Zhytomyr region, 9 from Zhytomyr to Rivne, 7 from Chernihiv to Kyiv, 1 from Rivne to Volyn, and crucially, 1 UAV from Volyn crossing into Poland. Another UAV was observed over Lviv, and one in the Cherkasy region moving west. The Polish Operational Command has stated that ground-based air defense and radar reconnaissance systems are at peak readiness. Previous reports indicated that Warsaw's airspace had reopened around 00:50 UTC on September 10th, following earlier temporary closures. This reopening occurred amidst continued drone activity, with some flights having shifted further west. Representative Joe Wilson has previously characterized Russia's alleged use of Iranian Shahed drones against Poland as an "act of war."