A new report shows the CIA interrogation tactics on suspected terrorists include waterboarding and other violent techniques, which were kept from the White House, Congress and the public, according to CNN.

All of the CIA's interrogation methods used on terrorist suspects were more brutal than the CIA ever depicted.

In one instance, a detainee died of hypothermia after being chained to a concrete floor "partially nude" CNN reported. In other torture instances, naked prisoners were hooded and dragged up and down corridors while being slapped and punched.

The terrorist program was devised by two agency contractors in order to gain information from suspects after the Sept. 11, 2001 attacks that occurred under President George W. Bush, according to Reuters. It was used to extract information from al Qaeda and other captives in secret detention facilities in various countries, including Afghanistan, Poland, Romania and Thailand.

None of the interrogation methods and none of the information allegedly gathered through these methods ever stopped any terrorist plot, Reuters reported.

The program was used by the CIA from 2002 through 2006.

The report issued by the Senate Intelligence Committee includes torture as an interrogation method and resulted in "fabricated" information.

"This document examines the CIA's secret overseas detention of at least 119 individuals and the use of coercive interrogation techniques - in some cases amounting to torture," said committee chair Dianne Feinstein.

The report said the CIA had tried to justify its use of the program by giving examples of what it called "thwarted" terrorist plots and suspect captures, but the "representations were inaccurate and contradicted by the CIA's own records," according to Reuters.

"Torture techniques were used in combination and nonstop. Sleep deprivation involved keeping detainees awake for up to 180 hours, usually standing or in painful stress positions, at times with their hands shackled above their heads," the report read.