WASHINGTON  A lawyer for Pfc. Bradley Manning, the Army intelligence analyst accused of leaking secret government files to WikiLeaks, has complained that his client was stripped and left naked in his cell for seven hours on Wednesday.

The conditions of Private Manning’s confinement at the Marine brig in Quantico, Va., have drawn criticism in recent months from supporters and his lawyer, David E. Coombs.

The soldier’s clothing was returned to him Thursday morning, after he was required to stand naked outside his cell during an inspection, Mr. Coombs said in a posting on his Web site.

“This type of degrading treatment is inexcusable and without justification,” Mr. Coombs wrote. “It is an embarrassment to our military justice system and should not be tolerated. Pfc. Manning has been told that the same thing will happen to him again tonight. No other detainee at the brig is forced to endure this type of isolation and humiliation.”