Chief U.S. District Judge Gerald Rosen said Tuesday Cox's testimony in the deposition will be sealed indefinitely over Cox's objections, The Detroit News reported.
The parents of Tamara Greene, who was killed in an unsolved 2003 drive-by shooting, say city officials hindered the investigation of her death because she had been hired in 2002 to dance at a long-rumored party held at the mayor's mansion, where she was allegedly assaulted by the wife of then-Mayor Kwame Kilpatrick.
The News said Cox investigated the party rumors and concluded they were "urban legends." State police investigators have testified that Cox quashed their probe into whether the party ever happened.
Cox spokesman John Sellek said the Attorney General wanted the testimony from his deposition open to public scrutiny to avoid the appearance that he has something to hide, but Rosen ruled it should be sealed to prevent it from contaminating the Greenes' case, the newspaper said.