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Alvin Long Soldier Jr Missing Person Case

Last seen in Vermillion, South Dakota on Dec 10, 2020

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Case Description

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In the small city of Vermillion, South Dakota, a family continues to wait for answers in the disappearance of Alvin Alton Long Soldier Jr., who was 51 years old when he vanished. Known affectionately as "Chip" or "Chipper," Alvin was last seen in Vermillion on December 10, 2020. An enrolled member of the Oglala Sioux Tribe, he is described as a Native American male, standing 6 feet 1 inch tall and weighing around 170 pounds, with black hair and brown eyes. Since that early wi ...Read More
Last Seen: Dec 10, 2020

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  • Missing Person / NamUs #MP158972

    • Victim Details

    May 26, 2026

    Jun 01, 2026

    Alvin

    Long Soldier Jr

    56

    51

    73 inches

    170 lbs

    American Indian / Alaska Native

    Male

    Dec 10, 2020

    Vermillion

    South Dakota

    Clay County

    No

    195530

    Bureau of Indian Affairs

    Rapid City

    South Dakota

    Pennington County

    57702

    Savannah Peterson

    Speical Agent

    2026 Samco Road, Suite 103, South Dakota

    6053412123

    Federal

    Law Enforcement

    I-26-0000000252

    Bureau of Indian Affairs

    Black

    Brown

    Brown

    06/16/2026


    Area Last Seen:

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