Rule 11-413 Use of evidence obtained under immunity order precluded.

If someone is forced to testify or hand over evidence after being given immunity, the government cannot use that testimony or evidence against them later in a criminal case. This includes not just what they said directly, but also anything else the police or prosecutors learned because of that testimony.

There are only two exceptions to this protection. First, if the person lies while testifying under immunity, they can still be prosecuted for perjury. Second, if the person refuses to follow the immunity order and testify as required, they can face contempt charges for that refusal.

In short, immunity protects a person from having their forced testimony used to convict them of a crime, but it does not give them a free pass to lie under oath or to ignore the court's order to testify in the first place.