Few people were in a better position to see what happened to Michael Brown, the unarmed black teenager who was killed by a Ferguson police officer, than his friend Dorian Johnson.
But NBC News  points out that the FBI never released Johnson’s witness testimony, despite a pledge to disclose all of the evidence.
Johnson was with Brown the day he was killed.
St. Louis County Prosecuting Attorney Bob McCulloch didn’t say why he omitted the records, which include pre-grand jury statements. His executive assistant, Bob McCulloch, said the federal government urged his office not to disclose records tied to the Justice Department’s civl rights investigation.