Fitzgerald doesn't indict anyone! He does make a case for an indictment but the Grand Jury brings the indictment.
Deliberations
When the grand jury has received all the evidence on a given charge, all persons other than the members of the grand jury must leave the room so that the grand jury may begin its deliberations. The presence of any other person in the grand jury room while the grand jury deliberates or votes may nullify an indictment returned on the accusation.
After all persons other than the grand jury members have left the room, the foreperson will ask the grand jury members to discuss and vote upon the question of whether the evidence persuades the grand jury that a crime has probably been committed by the person accused and that an indictment should be returned. Every grand juror has the right to express his or her view of the matter under consideration, and grand jurors should listen to the comments of all their fellow grand jurors before making up their mind. Only after each grand juror has been given the opportunity to be heard will the vote be taken. It should be remembered that at least 16 jurors must be present and 12 members must vote in favor of the indictment before it may be returned.
The foreperson of the grand jury must keep a record of the number of jurors concurring in the finding of every indictment and file the record with the Clerk of the Court. If an indictment is found, the grand jury will report it to the judge or a magistrate in open court. It will likewise report any "not true bills," or decisions not to indict. A decision not to indict should immediately be reported to the court in writing by the foreperson so that the accused may promptly be released from jail or freed from bail.