16.—(1) Subject to Article 5(2) and without prejudice to any other right of challenge, the fact that the name of any person empanelled as a juror is not on the Jurors List or that such a person was empanelled contrary to Article 5 shall be a good cause of challenge to that person,
(2) If the court is satisfied upon production of the Jurors List or by such other evidence as the court deems sufficient that a person empanelled as a juror—
(a)is not named in the Jurors List, or
(b)was empanelled contrary to Article 5,
the court shall discharge him.
(3) The onus of proving that a person ought to be discharged shall lie upon the person challenging him.
(4) If any person whose name is not contained in the Jurors List is empanelled and sworn as a juror without objection, the trial shall not be interrupted or deemed a mistrial on account of the service of that juror.