Any person summoned to be heard as a witness shall be required to appear, take an oath and give evidence subject to the provisions of Articles 226-13 and 226-14 of the Penal Code.
Any journalist, heard as a witness about information gathered in the course of his or her work, is free not to reveal its origin.
If the witness does not appear or refuses to appear, the investigating judge may, at the request of the public prosecutor, force him or her to do so.