The explosion occurred in Odessa. This is reported by the local agency Ukrinform.
"There was an explosion in Odessa," the report said.
Details are not given.
According to the online map of the Ukrainian Ministry of Digital Transformation, a few minutes before the explosion in The Odessa region was declared an air alert. Kirovograd, Sumy, Chernihiv and Cherkasy regions were also in the red zone.

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