A 21-year-old Prince George's County man has been arrested and charged in connection with the fatal stabbing last winter of a 49-year-old Interior Department employe in the victim's Georgetown apartment.

Anthony Quinn Kerns, listed by authorities as a resident of Capitol Heights and a utility worker, was arrested by D.C. police Thursday on a warrant charging him with second degree murder while armed in the death of Thomas L. Noel, an Interior Department cultural liaison officer.

Noel, a native of Montana who came here in 1956, was found stabbed once in the chest Feb. 4 in his apartment at 2500 Q St. NW.

Police declined yesterday to provide details of their investigation.

Meanwhile, homicide detectives said they were still seeking clues in connection with three separate murders that occurred here yesterday and Thursday.

In the first of them, police said, William Reed, 20, of 926 French St. NW was found shot to death in an alley in the 1100 block of 10th St. NW. Reed was shot twice in the head and once in the back.

About 1:30 a.m. yesterday police said the body of an unidentified man who appeared to be in his middle 40s was found dead at the entrance to the McPherson Square NW Metro station.

Shortly after 9 a.m., the body of a woman who has not been identified, was spotted near a trail in a wooded area in Fort Dupont Park in Far Southeast Washington. The woman had been shot in the head.

Homicide detectives said they had no suspects in any of the three killings. They said that the man found at the Metro station apparently was killed after an altercation. They had no details about the other deaths.