Russian UAV groups were detected in Sumy, Kyiv, Chernihiv, Cherkasy, and Dnipropetrovsk regions between 12:15 PM and 1:15 PM UTC on December 27, 2025, triggering air raid alerts across Ukraine, according to multiple eRadar updates during the period. Two groups of UAVs were reported in Sumy, one in the Kyiv region listed as a false alarm query, one between Olyshivka and Kulikivka in Chernihiv region, one past Zolotonosha toward Kaniv in Cherkasy region, and one on Krynychki in Dnipropetrovsk region, eRadar stated. A source from Lpr1 noted a high number of UAVs passing through Russia's Bryansk region toward Kaluga and Oryol regions. Three Tu-95MS aircraft landed at Engels airfield in Russia after launching cruise missiles earlier in the morning and redeployed to Ukrainka airfield after rearming, eRadar reported. A Kyiv city account on X referenced Russian influence amid ongoing alerts, sharing a post from chronophagus. These detections follow Ukraine's Air Force report earlier at 1:00 PM UTC of downing or suppressing 503 of 559 Russian air attack vehicles launched since 6:00 PM December 26 targeting the Kyiv region, including 519 UAVs and 40 missiles, per eRadar. President Volodymyr Zelenskyy confirmed nearly 500 drones and 40 missiles struck overnight, with residential hits and one person missing under rubble.