Stafford Smith called the suggestion that he or the other lawyer, Zachary Katznelson, smuggled underwear to prisoners "patently absurd."

"Neither I, nor Mr. Katznelson, nor anyone else associated with us has had anything to do with smuggling 'unmentionables' into these men, nor would we ever do so," he wrote in response the letter.

Stafford Smith noted lawyers are searched when they enter the detention center and a camera monitors them while they visit clients. "The idea that we could smuggle in underwear is farfetched," he wrote in his reply.

Stafford Smith suggested where the military might redirect their investigation.

Under Armour briefs are popular with members of the military and suggested investigators check to see if the offending underwear was purchased at the U.S. Navy base where the prison is housed.