In an investigation under this subtitle, the Attorney General, a deputy attorney general, or any assistant attorney general whom the Attorney General designates may: issue a subpoena for the attendance of a witness to testify or the production of evidence; administer oaths; and examine witnesses. The laws that relate to civil actions govern the attendance and compensation of witnesses in an investigation under this subtitle. If a person fails to comply with a subpoena or refuses to testify about a material matter, on petition of the Attorney General, a circuit court may compel compliance with the subpoena.