Federal authorities on Friday morning announced details of an indictment against recalled Oakland Mayor Sheng Thao, her boyfriend, and two members of the politically influential Duong family on corruption charges.

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.

Two months after she was recalled as Oakland mayor, Sheng Thao has reportedly been criminally indicted by a federal grand jury, a blow to a city whose voters have made it clear they are fed up with crime and government dysfunction.