FLINT -- A Flint police union has filed a lawsuit in state court, claiming the city's former emergency manager violated Michigan law by imposing contract concessions.

The Flint Police Officers Association represents Flint's patrol officers. It's seeking a temporary restraining order against the contract changes.

According to the complaint filed in Genesee County Circuit Court, the changes imposed by then-emergency manager Michael Brown include a 5 percent wage cut, reduced retirement benefits and increased hours per shift.

City Attorney Peter Bade declined to comment.

Union President Kevin Smith says "fair and due process is all we're asking for."

A hearing is scheduled for Friday.