The US reportedly suspects that one of the five Taliban detainees traded last year for Sgt. Bowe Bergdahl is attempting to contact suspected Taliban associates in Afghanistan.
According to CNN, an ongoing US intelligence program to secretly intercept and monitor all of their communications in Qatar turned up evidence in recent months that one of them has "reached out" to try to encourage militant activity, one official said.
The revelation comes amid growing concerns over released Gitmo detainees returning to the terror world.
After taking office in 2009, US President Barack Obama had vowed to shut down the prison camp. Since then, numerous Guantanamo detainees have been transferred or returned to their countries.
The US Joint Chiefs of Staff chairman earlier said that the controversial Guantanamo Bay detention center is a psychological scar on the United States.
Gen. Martin Dempsey said the facility at the US Navy base in Cuba "does create a psychological scar on its national values," CBS News reported.
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Dempsey said there were "dozens" who still must be detained, adding that it was a policy decision for elected officials.
The Congress has reportedly disallowed the transfer of any Gitmo detainees to the US.
A small team of lawyers and diplomats at the US State Department have been assigned the task to urge other countries to accept detainees cleared for release.
However, the task is not an easy one- considering the fact that the team has to convince the other countries of doing something that the Obama administration is itself not ready for.