After months of maintaining her innocence, recalled Oakland Mayor Sheng Thao is facing criminal charges from a federal grand jury indictment that will be announced Friday morning, according to reports.

Sheng Thao, who was recalled by voters in the California city in November, said last year that she had done nothing wrong after the F.B.I. raided her home.

Ex-Oakland Mayor Sheng Thao faces criminal charges after she was indicted by a federal grand jury. She is among four people charged in a bribery and political corruption scheme.