A 38-year-old man being sought in the killings of a brother and sister this summer in Northeast Washington has been arrested at a relative’s home in Winston-Salem, N.C., according to the U.S. Marshals office.

Kevin A. Walker faces extradition to the District, where he is charged in a D.C. Superior Court warrant with two counts of first-degree murder while armed.

He is charged with killing Jamahl Jenkins, 21, and Jamie Jenkins, 28, on July 20. The siblings were shot about 3 a.m. in the 5300 block of East Capitol Street NE.

The U.S. Marshals Office in Greensboro, N.C., said Walker was arrested Thursday at his uncle’s apartment in Winston-Salem. A statement from the Marshals office said that officers seized clothing at Walker’s apartment.

D.C. police have not commented on a possible motive, but relatives have said that Jamie Jenkins had finished singing with her R&B band about 2 a.m. when she called her younger brother to say someone had snatched her purse. They said he left to help her.

Authorities said they were found fatally shot about an hour later.

Relatives said Jamahl Jenkins had worked for a restaurant and had had a son a few months before he was killed. His sister had wanted to become a singer and had been with a band called Raw Sounds.

The family said they did not know whether the killings were related to the purse snatching and that the two had been walking to a friend’s house when they were killed.