Nev. Rev. Stat. § 171.177
Except as otherwise provided in NRS 171.122 and 171.178, whenever any person is detained by a peace officer for any violation of a county, city or town ordinance or a state law which is punishable as a misdemeanor, the person must be taken without unnecessary delay before the proper magistrate, as specified in NRS 171.178 and 171.184, in the following cases:
(Added to NRS by 1973, 156; A 1975, 1200; 1993, 144)