N.D. Cent. Code § 57-29-01
In any transaction in which the state of North Dakota or any of its agencies, departments, or instrumentalities, prior to the taking effect of this code, has acquired, or thereafter acquires, title to any tract of land and there are listed and legally charged against the tract unpaid general property or other taxes or tax deeds, the holders of the liens of the taxes or tax titles are without power to enforce or to effectuate the same. All remedies for the enforcement or enjoyment of the liens or titles are suspended wholly and all proceedings to enforce or effectuate the liens or titles subsequent to the acquisition of the tract of land by the state of North Dakota or any of its agencies, departments, or instrumentalities and during the time the tract is owned by the state of North Dakota or any of its agencies, departments, or instrumentalities, are null and void, except that any tax title acquired previous to the acquisition of title by the state of North Dakota or any of its agencies, departments, or instrumentalities may be made effectual and may be enjoyed until the time the state of North Dakota or any of its agencies, departments, or instrumentalities acquires title based upon a mortgage or other conveyance previous in time to the due date of the taxes upon which the tax title is based, whereupon all rights, interests, powers, privileges, and immunities theretofore owned and enjoyed under the tax title are suspended forthwith, and the state of North Dakota or any of its agencies, departments, or instrumentalities may enter into possession of the tracts of land and shall have the entire control, use, and enjoyment thereof.
N.D.C.C. § 57-29-01