Frazier's non-profit runs the city-owned Granite Park.
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His federal lawsuit alleges that former city officials discriminated against Frazier by releasing an incomplete audit of the park's financial documents in 2018.
RELATED: Judge: Granite Park operator's civil rights lawsuit against City of Fresno can move forward
It now also accuses Smittcamp and Dyer of damaging Frazier's reputation by announcing investigations that have led to no charges or changes so far.
Smittcamp's office said she does not have a comment at this point because she has yet to be served.
RELATED: City officials say Granite Park's improper insurance poses pricey liability for taxpayers
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Mayor Dyer sent Action News a statement calling the lawsuit frivolous and far-reaching, noting it names two mayors, three city managers, two council members, the city attorney, and the DA.
It goes on to say in part, "As the mayor, I have a fundamental responsibility to protect the City of Fresno's financial interest and to ensure that our parks are being operated in an appropriate manner."