S.D. Codified Laws § 22-11-37
Failure to notify law enforcement that child is missing--Misdemeanor
Any parent, legal guardian, or caretaker who knowingly fails to notify law enforcement within forty-eight hours of learning that a child, in his or her care and less than thirteen years of age, is missing is guilty of a Class 1 misdemeanor.
Source: SL 2012, ch 120, § 1.