Johnson, who is listed in court records as Joshua Johnson, is suspected of shooting Brown July 8 in Southeast DC.
According to charging documents in the case, one witness told police that they saw one person pushing another down the street, in the direction of Galen St. The witness said Johnson came up behind those two people and began shooting at the person who was being pushed. That person fled into a nearby building; the documents describe Brown as being in that flight path at the time of the shooting.
The charging documents in the case do not make it clear that Brown was the intended target of the shooting, which also injured another man.
A status hearing in the case has been set for Oct. 26 with Judge Thomas Motley.