A person present in court or before a judicial officer may be required to testify in the same manner as if the person were in attendance upon a subpoena issued by the court or officer.
Mont. Code Ann. § 26-2-303
Person present required to testify
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.