The Darren Wilson story has changed

The Post Dispatch has reported that Darren Wilson engaged Mike Brown because he fit the description of the strong arm robbery suspect. http://www.stltoday.com/news/multimedia/special/darren-wilson-s-radio-calls-show-fatal-encounter-was-brief/html_79c17aed-0dbe-514d-ba32-bad908056790.html

Six days after the shooting, Ferguson police release strong arm video and later that same day, Ferguson police chief states that Wilson was not aware of the robbery, http://www.wsj.com/articles/police-name-darren-wilson-as-officer-in-ferguson-missouri-michael-brown-shooting-1408108371

Three months later after details have been released in the media and notes have been compared, the encounter is now closely related to the robbery with supporting radio calls. If this is true, certainly the chief of police should have known. Police departments should not be allowed to investigate their own crimes. Police need to be policed by an outside agency. This contradictory information three months later is not credible.