Citing "secret documents prepared on the basis of a purported eyewitness account," Fox's James Rosen wrote that Bergdahl had a roller-coaster experience after he was captured in 2009.
There were times, according to Rosen, when Bergdahl was "treated very much like a hostage," and other times the soldier bonded with his captors and was even allowed to carry a gun.
According to the report, Bergdahl managed to escape for five days at one point and. After he was re-captured, he was reportedly locked in a cage "like an animal."
The documents indicate that intelligence officials were aware of the conversion by August of 2012, at which time Bergdahl was describing himself as a "mujahid." He also apparently played soccer with his captors at the time and appeared "to be well and happy."