Witnesses are heard, either separately and without the presence of the parties, or during confrontations carried out between them or with one or other of the parties, by the investigating judge, assisted by his clerk; a record is made of their statements.
The investigating judge may call in an interpreter of legal age, excluding his clerk and the witnesses. The interpreter, if not sworn, shall take an oath to assist justice in his honour and conscience.
If the witness is deaf, the examining magistrate shall automatically appoint a sign language interpreter or any qualified person who has mastered a language or method of communicating with the deaf to assist him during his hearing. If the interpreter is not sworn in, he or she must take an oath to assist the court in all honour and conscience. Any technical device may also be used to communicate with the witness. If the deaf witness can read and write, the examining magistrate may also communicate with him in writing.