Ukraine's Air Force said the enemy likely compromised its public air raid alert app

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Ukraine's Air Force said Sunday that the country's public air raid alert app was likely compromised by the enemy after it sent users false emergency warnings. The alerts included warnings of radiation, chemical hazards and street fighting, according to reports. The BBC said the app briefly warned that Kyiv faced a radiation threat. BNO News reported that users in Kharkiv saw nuclear and chemical hazard alerts, while street-fighting and artillery warnings appeared for Zaporizhzhia. The Air Force said there was no radiation threat and urged residents to remain calm. Vinnytsia oblast governor Natalya Zabolotna said a cyberattack had affected the app and warned people not to click a link in the message, the BBC reported.