SDCL § 23A-3-3: Citizen's arrest.

Any person may arrest another:

(1) For a public offense, other than a petty offense, committed or attempted in his presence; or

(2) For a felony which has been in fact committed although not in his presence, if he has probable cause to believe the person to be arrested committed it.

Source: SDC 1939 & Supp 1960, § 34.1608; SDCL, § 23-22-14; SL 1978, ch 178, § 16.