Nearly 500 coal miners have been trapped underground in eastern Ukraine after shelling damaged the nearby power station.
The Zasyadko coal mine near Donestk City lost power at approximately 9am GMT on January 26, according to The Independent.
More than 100 workers were evacuated, and it is not known how many of the 496 workers trapped were injured.
A similar blackout took place on January 12, when 390 miners were trapped in the mine.
Donetsk is held by rebel forces, and it is not known whether the shell came from Ukrainian Government or rebel forces, however the rebel Donetsk People’s Republic told Russian media that Ukrainian artillery was to blame.
Ukrainian president Petro Poroshenko said radio and telephone interceptions proved the rebel forces were responsible.
Last year 30 miners were trapped at the Komsomolets-Donbasu mine after power outages due to shelling in the region.
Donetsk is the fifth largest city in Ukraine, and was the home of ousted president Viktor Yanokovich.