Published: Aug 24, 2011 3:33 PM EDT

MOSCOW (AP) - Russia's space agency says an unmanned supply ship bound for the International Space Station has failed to reach its planned orbit.
    
The brief statement from the Roscosmos agency did not specify whether the Progress supply ship that was launched Wednesday from the Baikonur cosmodrome had been entirely lost.
    
The statement said the third stage of the rocket firing the ship into space had failed at 325 seconds into the launch.
    
The ship was carrying more than 2.5 tons of supplies, including oxygen, food and fuel. Since the ending of the U.S. space shuttle program this summer, Russian spaceships are the only supply link to the space station.

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