Prosecutors can use grand juries to start criminal proceedings against targets. Grand juries bear some similarity to trial, but are really entirely different animals.
Why Prosecutors Choose Grand Juries Instead of Preliminary Hearings
The grand jury process is prosecutor-friendly.
Testifying Before a Grand Jury
Your rights in a grand jury room -- whether called as a witness or as the target of the investigation -- are very limited.
Do Prosecutors Have to Present Evidence That Helps the Defendant to a Grand Jury?
In many states, when prosecutors initiate a case through use of a grand jury, they have to present evidence that’s helpful to the accused.