SIOUX FALLS, S.D. (AP) — A national organization that highlights the work of women in law enforcement has recognized an assistant federal prosecutor in South Dakota for his efforts in combating human trafficking.

The group Women in Federal Law Enforcement has honored Assistant U.S. Attorney Kevin Koliner with the organization's Top Prosecutor Award.

Koliner is the first man to receive the award, which recognizes career federal prosecutors for their work against the trafficking of women or children, civil rights violations and corporate or government fraud.

U.S. Attorney Brendan Johnson says Koliner has successfully prosecuted five separate sex trafficking cases that involved defendants preying on multiple girls and young women. Johnson says three men who were prosecuted received life sentences.

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