It was not immediately clear what charge Zimmerman will face.
Martin, 17 and unarmed, was shot and killed Feb. 26 by Zimmerman, who said he was acting in self-defense. Police in Sanford, Fla., where the shooting took place, did not charge Zimmerman, citing the state’s “stand your ground” law.
Corey told reporters Tuesday night that she would hold a news conference about the case within 72 hours. A news release from her office said the event will be held in Sanford or Jacksonville, Fla.