A D.C. Superior Court jury yesterday found two Washington men guilty of first-degree murder in the Jan. 6 shooting death of a 25-year-old Northwest Washington woman following what prosecutors said was a dispute over the theft of a shotgun.

The jury deliberated nearly five hours before finding Jerry L. Speaks, 24, of 1312 Clifton Street NW, and Roy A. Daniels, 31, of 130 Rhode Island Ave. NW, guilty in the slaying of Sharon E. Smith, who lived in an apartment three floors above Speaks.

During the trial, assistant U.S. Attorney Elliot R. Warren contended that both men entered Smith's apartment, where Speaks shot her once in the head with a .38-caliber handgun and attempted to shoot her brother, Donald. Both men also were found guilty of assault with intent to kill the brother.

Speaks and Daniels also were charged with murder in Prince George's County in the slaying the same evening of Philip Pace, who lived on Clifton Street with Speaks. Officials said the slaying followed an argument over the same shotgun. Speaks pleaded guilty in that killing and has been sentenced to 40 years in prison. Daniels is scheduled to go to trial in that case Nov. 3.