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WASHINGTON (CNN) -- Security experts are questioning information released by the Pentagon last week, saying 61 former detainees from its detention center at Guantanamo Bay, Cuba, may have returned to terrorist activities.
The report, released days before President Obama took office, says 18 former detainees are confirmed to have participated in attacks, and 43 are suspected to have been involved in attacks.
That figure would be about 11 percent of the roughly 520 prisoners who have been released from the Guantanamo facility, which Obama on Thursday ordered be shut down.
On Friday, a Pentagon spokesman defended the integrity of the report but would not directly answer questions about where the figures come from.
"We don't make these figures up. They're not done willy-nilly," spokesman Geoff Morrell said.
Pentagon officials have said they would not discuss how the statistics were derived because of security concerns that such information could give clues to how U.S. intelligence officers collect their data.
http://www.cnn.com/2009/POLITICS/01/24/gitmo.detainees/index.html