Former Oakland Mayor Sheng Thao, her longtime partner and two local businessmen were named in an indictment unsealed Friday alleging the four conspired to funnel city business to companies owned by the men in exchange for money and benefits to Thao and her partner.

Former Oakland Mayor Sheng Thao, her boyfriend and a father-son team who run the local recycling company were indicted Friday on federal bribery and conspiracy charges for an alleged pay-to-play scheme.

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.

Thao has maintained her innocence and denied she is at the center of a public corruption scandal. She has largely laid low since being recalled in November.

Sheng Thao, who was recalled by voters in the California city in November, said last year that she had done nothing wrong. She pleaded not guilty to the charges on Friday.

The Duong Family owns Cal Waste Solutions, Oakland's recycling company, which also provides junk pick-up in San Jose, and an integrated waste management facility in their native Vietnam.

Oakland’s former Mayor Sheng Thao, her longtime romantic partner and the owners of a waste company were involved in a bribery scheme that influenced city government. The charges include conspiracy, bribery,