Florida special prosecutor Angela Corey will charge George Zimmerman in connection with the shooting death of Trayvon Martin, sources said Wednesday, but it is not immediately clear what the charges will be. Zimmerman shot and killed Martin, 17, while acting as a neighborhood-watch volunteer, and was initially not charged in the teenager’s death because Zimmerman claimed he acted in self-defense. The resulting public outcry caused a review of the charges, although Zimmerman has reportedly since been out of communication. Martin’s parents held a press conference Wednesday during which they urged Zimmerman to come forward. Authorities said they knew the whereabouts of Zimmerman, but said that he was not in Florida.