Perhaps all I could add is that we don't usually refer to them as prisoners. We like to use the term “detainees” specifically for what they are. When we first capture an individual--when we first take a detainee under our wings--we do an assessment of whether they should be passed on to the Afghan national security forces or released. If it's clear in our minds that they are insurgents and have been conducting insurgent operations in Afghanistan and against alliance forces, then we will pass them on to Afghan national security forces. That's generally the idea.
On December 11th, 2006. See this statement in context.