Three wounded in Russian attack on Ukraine's Odessa

At least three people were wounded in Russia's overnight attack on the port city of Odessa, the governor of the Ukrainian region on the Black Sea said early on Monday.

"As a result of the enemy attack in Odessa, several fires broke out from falling rocket fragments," the governor, Oleh Kiper, said on the Telegram messaging app. "Windows in buildings were blown out by the blast wave."

 Explosions were heard in Odessa for the fourth time over the night, according to Obshestvennoye Ukrainian publication.

 An air alert has been declared in a number of regions of Ukraine - in Vinnitsa, Kirovograd, Nikolaev, and Cherkassy regions and was later cancelled.