FORT MEADE, Md. — An Army Reserve officer accused of ignoring abuses of Iraqi detainees at Abu Ghraib prison was a daily visitor to the “hard site,” where some detainees were stripped naked as an interrogation technique, a former military police commander testified yesterday.

Captain Donald Captain Reese’s testimony supported government allegations that Lieutenant Colonel Steven Jordan, as director of the prison’s interrogation center, knew about the abuse and lied about it.

Captain Reese testified on the third day of Colonel Jordan’s Article 32 investigation, the military equivalent of a grand jury hearing.The hearing to determine whether Colonel Jordan, the highest-ranking soldier charged in the scandal, should be court-martialed for any of the 12 charges he faces.He could face up to 42 years in prison if convicted.

Captain Reese was commander of the 372nd Military Police Company, which guarded the hard site at Abu Ghraib in the autumn of 2003, when most of the abuses documented in photographs seen around the world occurred.

Prosecutor Lieutenant Colonel Jon Pavlovcak asked him yesterday how often he had seen Colonel Jordan inside the hard site, a building that housed prisoners held for interrogation. “Every day, sir,” Captain Reese replied.

Captain Reese testified that he couldn’t remember whether Colonel Jordan had ever told him directly why some prisoners were naked. But Captain Reese acknowledged having told Major General Antonio Taguba during General Taguba’s 2004 investigation of the Abu Ghraib scandal that he had had a conversation with Colonel Jordan about it.

General Taguba’s report quotes Captain Reese as saying, “He just said it’s an interrogation method that we use.”

Captain Reese testified yesterday that he remembered being told, although not necessarily by Colonel Jordan, that some prisoners were naked due to lack of clothing, refusal to wear clothes, and for disciplinary reasons.

A defense witness, civilian interrogator Steven Pescatore, testified Colonel Jordan didn’t seem to be in charge of interrogations when Mr. Pescatore was at Abu Ghraib between late September and mid-November 2003, despite Colonel Jordan’s title as director of the Joint Interrogation and Debriefing Center.

“He seemed to have some kind of support role, but he was never anyone I went to or through regarding interrogations,” Mr. Pescatore said. Mr. Pescatore said he worked through a chain of command that included Captain Carolyn Wood, who ran a unit called the Interrogation Control Element, and Colonel Thomas Pappas, who commanded the 205th Military Intelligence Brigade and took over direct supervision of the interrogation center.