CUSTER COUNTY, S.D. (KELO) — The South Dakota Division of Criminal Investigation says agents are assisting with a shooting incident in Custer County near Red Shirt Table that happened Thursday.

Authorities say this is related to a separate shooting that happened on the Pine Ridge Reservation involving an officer from the Oglala Sioux Tribe Department of Safety.

The DCI says at this time one person is dead and two others are in custody.