Witnesses before grand jury may be subpoenaed and sworn.

Miss. Code Ann. § 13-5-63
in effect
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The foreman of the grand jury shall have power to order subpoenas for all witnesses desired to be produced, and he shall also have power to swear all witnesses. A record shall be kept by the foreman and returned to court, certified and signed by the foreman, of the names of all witnesses sworn before the grand jury.

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