Authorities have never resolved the death of an African-American man who went to the Pine Ridge Reservation in 1973 to support the American Indian Movement.

Ray Robinson was reportedly at Wounded Knee when he was killed. His widow says an Indian man confessed to the murder. Cheryl Robinson believes he may have been killed because AIM members thought he was a federal informant.

AIM leaders who were at Wounded Knee say they are unaware of the man. Government documents note the presence of at least one African-American male.

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AIM case may help find man (AP 1/16)