Ukraine blames Russia after its air raid app was hacked to send fake nuclear and radiation alerts across Kyiv

Ukraine's air raid alert app was hacked on Sunday night, with false messages warning of radiation, chemical and nuclear threats pushed to millions of users across Kyiv and other regions. Ukrainian air force spokesman Yuriy Ignat confirmed the breach directly to AFP, and SPRAVDI, Ukraine's Centre for Strategic Communications, blamed Russia. The hack struck minutes after the expiry of a Kherson ceasefire — the longest truce of the war.

One hoax alert, written in Russian, read: 'Don't worry, it's Oreshnik flying' — referencing a ballistic missile.

Loudspeaker hazard sirens were triggered across the Lviv region before authorities clarified there was no real threat.

Vinnytsia governor Natalya Zabolotna warned residents not to click any link attached to the alert messages.