Police have announced the arrest 36-year-old Sean Smith, charging him with the alleged murder of Matthew Walker in August.
Smith has been charged with second-degree murder while armed. He was presented in D.C. Superior Court and is being held without bail.
He is due to appear in court again on October 28 at 9:30 a.m.
According to police, Walker was found dead from apparent gunshot wounds in the early morning of August 7.