A woman has been sentenced to five years of probation and a suspended prison term for her role in the killing of an American Indian Movement member on South Dakota's Pine Ridge reservation 35 years ago.

Attorney General Marty Jackley says Thelma Rios pleaded guilty to being an accessory to kidnapping in the 1975 slaying of Annie Mae Aquash (AH'-kwash).

Prosecutors say Aquash was shot to death because she was a suspected government informant.

Jackley says Rios was sentenced to five years in prison, but the judge suspended the sentence and ordered Rios to serve five years of probation.