section 521(8)


521(8) On the hearing of an application under this section, the judge may consider (a) the transcript, if any, of the proceedings heard by the justice and by any judge who previously reviewed the order made by the justice, (b) the exhibits, if any, filed in the proceedings before the justice, and (c) such additional evidence or exhibits as may be tendered by the prosecutor or the accused, and shall either (d) dismiss the application, or (e) if the prosecutor shows cause, allow the application, vacate the order previously made by the justice and make any other order provided for in section 515 that he considers to be warranted.