The explosion was heard in Poltava, UNN reports with reference to Suspilne.
"The sound of an explosion was heard in the Poltava community," the newspaper said, citing residents of the regional center.
Monitoring groups report the sound of explosions in Poltava.
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Earlier, the Air Force reported threats of ballistic missile attacks from the northeast.
Later, we received a warning about a missile in Poltava region from the east.