Army leaker's trial resumes at Fort Meade, Md.

Army Pfc. Bradley Manning, right, is escorted as he arrives at the courthouse in Fort Meade, Md., Tuesday, June 25, 2013, after the start of the fourth week of his court martial. Manning is charged with indirectly aiding the enemy by sending troves of classified material to WikiLeaks. He faces up to life in prison. (AP Photo/Jose Luis Magana)

FORT MEADE, Md. (AP) — Lawyers in the court-martial of Army leaker Pfc. Bradley Manning are preparing for the trial's first courtroom closures to protect classified evidence.

The trial entered its fourth week Tuesday at Fort Meade, near Baltimore. Manning is charged with aiding the enemy and other offenses for admittedly sending reams of classified information to the anti-secrecy organization WikiLeaks.

In a housekeeping session Tuesday, defense attorney David Coombs said he had no objection to the military judge, Army Col. Denise Lind, closing the courtroom to hear prosecutors read aloud the classified sections of written witness statements.

The first closure could come as early as Wednesday, when testimony resumes.

Manning is a former intelligence analyst. He says he leaked the material to expose wrongdoing by American service members and diplomats.