Nev. Rev. Stat. § 239.0113
Except as otherwise provided in NRS 239.0115, if:
2. The governmental entity that has legal custody or control of the public book or record asserts that the public book or record, or a part thereof, is confidential,
the governmental entity has the burden of proving by a preponderance of the evidence that the public book or record, or a part thereof, is confidential.
(Added to NRS by 2007, 2062)