By Suzanne Presto, CNN

updated 8:41 PM EDT, Wed May 14, 2014

STORY HIGHLIGHTS

(CNN) -- Russia said it does not plan to use the International Space Station beyond 2020, casting a shadow on U.S. plans to continue cooperation with the country and extend the life of the orbiting laboratory until at least 2024.

Russian Deputy Prime Minister Dmitry Rogozin told reporters Tuesday that Russia is looking to redirect its attention to other projects after 2020. His comments come as tensions mount over U.S. sanctions on Russia for its role in the crisis in Ukraine.

NASA released a statement saying that the U.S. space agency "has not received any official notification from the Government of Russia on any changes in our space cooperation at this point."

NASA added that cooperation in space has been a hallmark of U.S.-Russian relations, even during the Cold War, and it pointed to the past 13 years of continuous human presence on the orbiting outpost.

International Space Station

International Space Station

International Space Station

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Russia tensions hit space station