Background: Last year, Ms. Seo accused Mr. Ahn — once a rising star at the Justice Ministry — of sexually molesting her. She said she had been so traumatized by the abuse that she had a miscarriage. But she said that when she lodged a formal complaint, Mr. Ahn used his influence to have her transferred to an obscure posting in a small provincial city.

Mr. Ahn has denied the charges against him.

Why it matters: Ms. Seo’s decision to make her accusations public was a highly unusual move in a country where victims of sexual violence have been afraid to speak out, and it encouraged a steady stream of other women to break their silence about alleged sexual abuse.

In other South Korea news: A former chief justice of the country’s Supreme Court was arrested on charges of conspiring with the ousted and impeached president, Park Geun-hye. He is the first former or sitting chief justice to be arrested.