Since December, residents in the Weems and Sumner Lake neighborhoods have found crudely written threats left at their front doors, police said.
At least one of the notes carried a death threat. Three of the notes were delivered last week, according to police. In at least one instance, a resident also found several of her clay lawn ornaments broken.
The suspect is described as a man with light brown to black hair, a light to medium complexion, medium build and average height.
Anyone with information can call police at 703-330-0330 or 703-257-8092.