RAPID CITY - A 22-year-old South Dakota man has been sentenced to 30 years in prison for beating a sleeping man to death with a baseball bat on the Pine Ridge Indian Reservation.

The Rapid City Journal reports that Kyle Yankton was sentenced in federal court for killing 23-year-old Pablo Galindo while Galindo slept in his girlfriend's home last June. The girlfriend is Yankton's ex-girlfriend.

Prosecutors reduced the charge to second-degree murder as part of a November plea deal.

Galindo was an enrolled member of the Oglala Sioux Tribe who moved from Nebraska to Pine Ridge just two months before the incident to help out his grandparents.

Galindo's mother, Lorna Galindo, says she doesn't think the sentence is long enough.

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