A motion for a new trial based on ground (3) of Article 851 shall contain allegations of fact, sworn to by the defendant or his counsel, showing:
(1) That notwithstanding the exercise of reasonable diligence by the defendant, the new evidence was not discovered before or during the trial;
(2) The names of the witnesses who will testify and a concise statement of the newly discovered evidence;
(3) The facts which the witnesses or evidence will establish; and
(4) That the witnesses or evidence are not beyond the process of the court, or are otherwise available.
The newly discovered whereabouts or residence of a witness do not constitute newly discovered evidence.