March 9 (Reuters) - Russian strikes hit a series of Ukrainian regions early on Thursday, including the Black Sea port of Odesa and Ukraine's second largest city, Kharkiv, knocking out power to several areas, regional officials said.

The governor of Odesa region, Maksym Marchenko, said on Telegram that a mass missile attack had hit an energy facility in the port city, triggering power cuts. Residential areas had also been hit, but no casualties were reported.

Kharkiv region Governor Oleh Synehubov said the city and region had been hit by 15 strikes, with targets including infrastructure. Other strikes were reported in the central city of Dnipro and regions throughout the country. (Reporting by Ron Popeski and Olzhas Auyezov; Editing by Himani Sarkar)