Section 17-146 - Offender a competent witness; witnesses' immunity1. A person offending against any section of this article is a competent witness against another person so offending and may be compelled to attend and testify on any trial, hearing or proceeding or investigation in the same manner as any other person.2. In any criminal proceeding before a court or grand jury for a violation of any of the provisions of this article, the court or grand jury may confer immunity in accordance with the code of criminal procedure.