The phrase "at an interrogation" is correct and usable in written English.
It can be used when referring to a situation or event that takes place during a formal questioning process, often related to law enforcement or investigative contexts.
Example: "The suspect was nervous and fidgety at an interrogation, revealing signs of anxiety."
Alternatives: "during an interrogation" or "in an interrogation setting".
At the moment Vinh is being held at an interrogation center in Saigon.
As a result, the military commission prosecutor might "launder" coerced witness statements — by introducing a summary through an official who was not even present at an interrogation, has no knowledge of its circumstances, and thus cannot be effectively cross-examined about them.
Lieutenant Colonel Warren J. Lucas, the Americal Division's provost marshal, or chief law-enforcement officer, told the Peers commission that most of the war-crimes investigations conducted by his unit involved the theft of goods or money from civilians or, occasionally, a charge that G.I.s had raped a prisoner of war at an interrogation center.
I would have written it out here, but apparently it's still classified and being used as an interrogation device at Gitmo.
2005 Newsweek reports the Koran was flushed down the toilet as an interrogation tactic at Guantanamo Bay.
Moreover, the question of whether it amounted to torture or abuse does not depend on it being part of the prescribed interrogation program, or even being used as an interrogation technique at all.
Further rumours suggested that if not at Ramasun, an interrogation site may be located at one of the area's army bases not open to the public.
"This is a rough crowd, this administration," Carr complains after being snarled at in an interrogation by a mean-spirited prosecutor named Mungo who embodies the twin (Republican) traits of cronyism and homophobia.
(176-77) Athatat point, an interrogation ensues of manic proportions, a blend of Kafka and the Marx Brothers.
Here a man, there a woman, stare at some distant point with an interrogation aimed at no one.
A witness, Jamie Anderson, said during an interrogation at the police station that she heard a sound "like a gun going off," and then saw the officers go toward the car.
