150 former Guantanamo detainees are either “confirmed or suspected of reengaging in terrorist or insurgent activities,” according to a new intelligence assessment released by the Director of National Intelligence’s office on Tuesday. In total, 598 detainees have been transferred out of U.S. custody at Guantanamo. 1 out of every 4, or 25 percent, of these former detainees is now considered a confirmed or suspected recidivist by the U.S. government.

The DNI’s latest assessment is a significant increase over previous estimates. In June 2008, the Department of Defense reported that 37 former detainees were “confirmed or suspected” of returning to terrorism. On January 13, 2009 — seven months later — Pentagon spokesman Geoff Morrell said that number had climbed to 61. As of April 2009, the DoD found that same metric had risen further to 74 — exactly double the Pentagon’s estimate just 11 months before.