A statement from state company Turkmengaz today said the decision by Russia's state-owned monopoly, Gazprom, was based on changes in the international gas market and unspecified "economic and financial questions."
Turkmenistan last year complained that Gazprom had not paid for its gas purchases. Gazprom could not be reached for comment today.
Over the last decade, Russia has dramatically reduced its reliance on gas from Turkmenistan, which has become a major supplier to China. It has also begun construction of a pipeline to Afghanistan, Pakistan and India.