At the request of prosecutors, Judge Charles Burns signed a certificate naming Acoff-Howard as a material witness. The document is being sent to the woman in Berkeley County, S.C., where she now lives, the Tribune said.
Acoff-Howard was a neighbor of the Hudson family at the time of the killings, the newspaper said.
Jennifer Hudson is a Grammy Award-winning singer who won an Oscar for her role in the movie musical "Dreamgirls."
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