In less than 24 hours between Friday and Saturday, as much of Washington awaited the arrival of Hurricane Irene, two people were slain in separate incidents in a small corner of the District on the eastern edge of Capitol Hill.

Despite the unusual similarities of time and place, there appeared to be no connection between the slayings. Police said both incidents occurred at private homes, and that in each case they involved people who knew each other. Arrests were made quickly in both.

In the more recent of the two, a woman was fatally stabbed about 9:45 p.m. Saturday in the 400 block of 16th Street NE. She was identified as Karen Jordan, 49, of Northeast Washington.

On Sunday morning, police said they arrested Stephanie Lawson, 44, of Northeast, on a warrant charging her with second-degree murder while armed.

In the earlier killing, police said Leonard Bigelow,43, was fatally shot about 10:45 p.m. Friday in the 1300 block of Emerald Street NE.

They said Brandon M. Andrews, 29, of Northwest Washington was arrested the next afternoon on a warrant charging him with second-degree murder while armed.

No street addresses were available for the suspects or victims in either case, and no information about motives were available Sunday.

Emerald Street, where the first of the killings occurred, is a one-block residential street running between 13th and 14th Streets NE, about a mile and a half from the Capitol. The site of the second killing is about a half mile southeast of the first incident.