Bowe Bergdahl after his release from captivity
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FBI probes death threats against Bowe Bergdahl's father

8 June 2014 Last updated at 17:53 BST

US authorities are investigating death threats apparently emailed to the father of Bowe Bergdahl, the soldier released by the Afghan Taliban last week after five years in captivity.

Meanwhile the New York Times has reported that he was tortured, beaten and held in a cage after trying to escape, as the BBC's David Willis reports.