A prisoner who has been charged with, pled guilty to, or been convicted of a class A or class AA felony in this state may not be transported except by employees of the department of corrections and rehabilitation or by law enforcement officers or correctional officers employed by a governmental agency. For purposes of this section, "governmental agency" means an agency or department of this state or of any political subdivision of this state, of another state or of a political subdivision of another state, or of the United States.
N.D.C.C. § 12-47-37