Investigators in Russia say sabotage was the likely cause of two pipeline explosions that cut natural gas supplies to neighboring Georgia and Armenia.
Officials say evidence of explosive devices was found at each site. Russian prosecutor Alexander Panov says the material that caused the explosions has not been clearly identified.
Georgian President Mikhail Saakashvili accused Russia of deliberately damaging the pipelines. He added that Moscow's explanation of sabotage is "inadequate and contradictory."
Sunday's incidents included a third explosion that knocked out a power line carrying electricity to Georgia. They come in the midst of record low temperatures throughout the region.
A spokesman for Russia's natural gas giant, Gazprom, says gas supplies to Georgia will be restored as soon as possible.