Kyle Man Sentenced to Federal Prison for Failing to Register as a Sex Offender

RAPID CITY - United States Attorney Ron Parsons announced today that U.S. District Judge Camela C. Theeler has sentenced a Kyle, South Dakota, man convicted of Failure to Register as a Sex Offender. The sentencing took place on June 8, 2026.

Bryan Black Tail Deer, 57, was sentenced to eight months in federal prison, followed by five years of supervised release, and ordered to pay a $100 special assessment to the Federal Crime Victims Fund.

Black Tail Deer was indicted by a federal grand jury in September 2025. He pleaded guilty on February 12, 2026.

Black Tail Deer was convicted of Aggravated Sexual Abuse of a Minor in August 1997 in United States District Court for the District of South Dakota. In February 2000, Black Tail Deer was convicted of First Degree Sexual Assault in the District Court of Sheridan County, Nebraska. Based on the nature of the convictions, he is required to register as a sex offender for life under the provisions of the Sex Offender Registration and Notification Act (SORNA).

In March 2024, Black Tail Deer registered his address at Kyle, SD. He is required to update his address in May and November of each year based on his birth date. Black Tail Deer, knowing he was required to do so, did not update his address in May 2024, November 2024, or May 2025.

This case was investigated by the U.S. Marshals Service. Former Assistant U.S. Attorney Heather Knox prosecuted the case.

Black Tail Deer was immediately remanded to the custody of the U.S. Marshals Service.