LIVE, war in Ukraine: Kiev and Moscow targeted by cyberattacks shortly after the ceasefire ended in Olechky; at least three people killed in Russian strikes on Sunday

Ukraine reported a cyberattack on its alert app, coinciding with Russian claims of a similar incident. Russian strikes resulted in three fatalities, including a 13-year-old girl. Ukrainian President Zelensky linked a halt on attacks on Russian refineries to the provision of Patriot missiles from the U.S. The ceasefire in Olechky ended, allowing humanitarian aid but also resuming hostilities. The Ukrainian air force indicated its alert app was compromised, spreading false information about threats.