The FBI created a "war crimes file" in 2002 in which its agents gathered evidence of prisoner mistreatment at Guantánamo Bay for eventual accusations against U.S. military personnel. However, the FBI was ordered to close down the file, according to a Justice Department report disclosed Tuesday.

The 437-page report of the Justice Department inspector general accounts the confusion within the Bush administration regarding the use of harsh interrogation techniques by the US military and the CIA such as making the prisoners do dog tricks and parade in the nude in front of female soldiers.

The US military collaborated with visiting Chinese officials at Guantánamo Bay, the report said. The foreign officials were used to interrogate the Chinese Muslims prisoners, who were woke up every 15 minutes the night before their interviews by the Chinese.

Another new episode of the "trench warfare" (as an official called it) at the Guantánamo Bay provided by the Justice Department report was that of a female interrogator who bent back an inmate's thumbs and squeezed his genitals. The rough methods were being also used on detainees in Afghanistan and Iraq.

According to the report, the complaints of the agents were taken to officials at senior levels at the FBI, the Justice Department, the Defense Department and the National Security Council, but they have done nothing about it.

The report includes fervent objections from FBI officials who were very concerned about the abusive practices used by the military and the CIA such as using snarling dogs to intimidate the prisoners or „short-shackling" them to the floor for many hours in extreme heat or cold.

Spike Bowman, then the head of the FBI's national security law unit, is also mentioned in the report. He tried to sound the alarm about the abuses but without much success.