A D.C. police officer jailed in connection with an armed robbery of a Sears, Roebuck & Co. store in November was assaulted at the D.C. Jail yesterday, a corrections official said, despite a court order to keep him in protective custody.

James T. Brown, 25, received bruises on his forehead, jaw and eye area and was taken to D.C. General Hospital about 4:20 a.m., the spokesman said. An inmate who asked not to be identified said Brown was attacked by another prisoner.

A hospital spokeswoman said Brown was treated and released, but she would not release details.

According to a preliminary Corrections Department report yesterday, Brown was taken out of his cell in the protective custody unit to clean coffeepots for his early morning work detail. One other inmate was in the area at the time, but that inmate said he was not involved and did not show signs of being in an altercation, the report said.

An inmate who knows Brown said Brown was attacked by a prisoner with a razor blade as he was mopping the floor in the jail about 3:30 a.m.

Brown, who worked as a D.C. officer for about a year and was assigned to the 6th District, was arrested Nov. 29 and charged with the armed robbery of the Sears store on Wisconsin Avenue NW. He is being held without bond pending trial.