C-25.1 - Code of Penal Procedure

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203. The trial judge shall hear the witnesses summoned or the persons present at the trial whose testimony may be required by the prosecutor or the defendant.
The judge may order the persons to testify if he is satisfied that their testimony may be useful. They cannot refuse to testify on the ground that they were not duly summoned.
1987, c. 96, a. 203.