Two Northwest Washington residents were arrested yesterday for allegedly forcing a 16-year-old girl to act as a prostitute, D.C. police reported.

Police said Gordon R. Stephens, 30, and Aileen Thomas, 26, both of 1421 Corcoran St. NW. were arrested after federal warrants were obtained charging them with pandering, which a morals division detective defined as "inducing or compelling a female to become a prostitute or engage in prostitution."

Police said the girl, also a North-west resident, met and befriended a woman at a discotheque. The woman is alleged in the warrant to have asked the girl's mother of permission to let her spend the weekend, but was told she could only stay part of an evening, police said.

The woman then reportedly took some of the girl's clothes and took her away in a cab. Later a man allegedly beat the girl, placed a pistol to her head and told her to "go out on the street or else."

The girl was found at Vermont Avenue and K Street NW by members of the police department's juvenile prostitution unit, and two suspects were identified with the help of a telephone number the girl's mother had obtained.

Thomas was arrested yesterday morning at the Corcoran Street address and Stephens was arrested at 15th and U Streets NW, police said. They said the case had been sent to a grand jury.