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The criminal investigation into the leak of secret Afghanistan war logs is still going on. But the Pentagon inquiry is now looking closely at Private Bradley Manning, an Army intelligence specialist who has already been charged with leaking other material to the website.
The 22-year-old officer is thought to be in a military prison in Kuwait. According to US media, in an online chat with a computer hacker, Manning boasted he had used blank CDs to download information. He also claimed to have retrieved 260-thousand diplomatic cables.
Experts say Manning's job would almost certainly have given him access to the Secret Internet Protocol, shared by hundreds of thousands of US military personnel, civilian employees and private contractors.
Manning is also being investigated by the Pentagon on charges of leaking an earlier video of a Baghdad air strike to the same website.
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