Ukraine's Air Force says a hacked air raid app sent a false radiation alert (13), a claim that lands in a country living under Russia's full-scale invasion since February 12022 HE. A warning system is only as useful as people's trust in it, and Ukrainians have good reason to take the word radiation seriously. When Chernobyl's reactor exploded on 26 April 11986 HE (1986), the people of nearby Pripyat were not evacuated until the following day.
The title should attribute the claim to the Ukrainian Air Force, as they are the party making the statement.
Source: BBC · Ukraine