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WASHINGTON (WUSA9) -- The leader of the Benghazi attacks that led to the deaths of four Americans in Lybia on September 11, 2012, appeared in a Federal Courthouse in D.C. on Wednesday where a judge ruled that he will remain in custody.

WUSA9's Nikki Burdine was in the courtroom, and say Ahmed Abu-Khatallah was silent throughout the hearing. She says he wore headphones that a translator spoke through.

WUSA9's Bruce Leshan reports that Abu-Khatallah defense conceded that the suspect should remain in custody and that the case was weak.

Officials sent out an 11-page document that described the charges against Ahmed Abu-Khatallah and the conditions of his pretrial hearing.

"In the days before the Attack, the defendant voiced concern and opposition to the presence of an American facility in Benghazi. On September 11, 2012, at approximately 9:45 p.m., a group of twenty or more armed men assembled outside the United States Special Mission in Benghazi ("Mission") and then aggressively breached the Mission gate. Several Benghazi-based AAS members have been identified among this group, many of whom are known associates of the defendant," federal officials said in the charging documents.

Khatallah faces murder and terrorism charges.

READ: Khatallah Full Charging Documents: http://on.wusa9.com/1mHpJ87

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