Davon Johnson, 28, was killed in a daytime shooting on January 28, 2015, on Walbrook Avenue in Northwest Baltimore.

Police identified 22-year-old Charles Henson as the shooter. After the killing, Henson reportedly went on the run and, a few days later, set fire to Johnson’s home in an apparent attempt to intimidate potential witnesses; detectives had moved Johnson’s family into witness protection. Local and federal authorities were reported to be involved in the search, and Henson was named Public Enemy No. 1 by the Baltimore Police Department.

Johnson had been a key witness in an unrelated 2013 murder case; prosecutors reportedly sought to preserve his testimony from an earlier trial. Does anyone have additional details about the shooting, the arson at Johnson’s home, or Johnson’s role as a witness in the other case?