KIEV, Feb. 16 – Accusations brought by Russia's Gazprom claiming that Naftogaz Ukraine has allegedly siphoned Russian gas while it is being pumped via Ukraine are groundless, Naftogaz Director for Business Development Yuriy Vitrenko said.

"These accusations are absolutely groundless. This is what we prove within the framework of the [Stockholm] arbitration," he wrote on his Facebook page on Monday evening.