On 7 December 1955 the FBI’s Mobile office began forwarding information on the bus boycott to FBI director J. Edgar Hoover. The special agent in charge of the office reports that someone, probably a member of the Montgomery police department, had been assigned to find “derogatory information” about King.
MIAFBI, DJ, Montgomery Improvement Association FBI File, United States Department of Justice, Washington, D.C., Bureau File 100-135