Air raid alerts sounded throughout Ukraine on Thursday morning due to the threat of cruise missile launches, according to local news agency Ukrinform.
Vitali Klitschko, mayor of Ukraine's capital Kyiv, said in a Telegram post that explosions were heard in the city and air defense was operating, urging residents to stay in the shelters.
Ukrinform also reported explosions in Dnipro, Zaporizhzhia and Lviv.
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