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The U.S. Embassy in Kyiv issued a security alert Saturday warning that a "potentially significant air attack" could hit the city in the next 24 hours.
The U.S. Mission Ukraine said in a statement, "The U.S. embassy in Kyiv has received information concerning a potentially significant air attack that may occur at any time over the next 24 hours."
"The embassy, as always, recommends U.S. citizens be prepared to immediately shelter in the event an air alert is announced," the warning added.
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The embassy urged Americans to "identify shelter locations before any air alert," keep reserves of food, water and medication nearby, follow the "directions of Ukrainian officials and first responders in the event of an emergency," to immediately take shelter if an alert is announced and to download an air raid app like Air Raid Siren or Alarm App.
The message follows a warning from Ukrainian President Volodmyr Zelenskyy that Russia was preparing to strike Ukraine with a hypersonic Oreshnik missile.
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This is a developing story. Please check back for updates.
