大陪審
No indictment or presentment can be made except by concurrence of at least twelve of the jurors. The grand jury may accuse upon their own knowledge, but it is generally done upon the testimony of witnesses under oath and other evidence heard before them. Grand jury proceedings are, in the first instance, at the instigation of the government or other prosecutors, and ex parte and in secret deliberation. The accused has no knowledge nor right to interfere with their proceedings.