SAN JUAN, Puerto Rico &#8212 After years of indefinite confinement, many detainees at Guantánamo Bay say they feel they may never receive justice, according to transcripts of hearings obtained by The Associated Press. Fewer than one in five of detainees allowed a hearing last year even bothered to show up.

The frustrated words of men, some of whom admit to fighting with the Taliban but swear they would go peacefully home if released, illustrate the seething tension at a prison where hundreds are held without charges. The transcripts also underscore that the U.S. allegations against the men are often as difficult to substantiate as they are for the detainees to refute.

Sometimes the allegations alarmed even the panels of military officers charged with determining whether a detainee should be freed.

Rahmatullah Sangaryar stood accused of “planning biological and poison attacks on United States and coalition forces in Kandahar, Afghanistan” and of possessing anthrax powder and a liquid poison.

The Afghan detainee said he possessed no anthrax and never planned such an attack. The officer in charge seemed to grope for a response.

“Do you know of anyone who would accuse you of such an act? This is so serious,” the unidentified officer exclaimed. “I am trying to understand why it is here in front of me, this allegation against you.”

The military has released a greater number of detainees from Guantanamo Bay than the roughly 340 men who are there today. As of Sept. 6, the U.S. had transferred or released about 435 prisoners.