More details are emerging of George Zimmerman, the 28-year-old Miami man who's making national headlines for killing unarmed 17-year-old Trayvon Martin a month ago and running free. Zimmerman, who admitted to shooting the teen, said he fired in self-defense and has not been arrested in the case.

A look at the local police department's history includes two other cases in which the Sanford Police Department was accused of giving favorable treatment to relatives of officers involved in violent encounters with blacks.