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A former federal judge in Washington, D.C., is asking for dismissal of a lawsuit claiming he sexually assaulted a Utah woman when he was a prosecutor and she was a 16-year-old witness in a high-profile case.

Lawyers for Richard W. Roberts argue the case should be tossed because the statute of limitations is up on the 1981 claims.

The woman's lawyer counters that a new Utah law removed such limitations in civil child sex abuse cases.

Terry Mitchell says Roberts abused her multiple times throughout the trial of a white supremacist who killed two black joggers.

Roberts acknowledged having an intimate relationship, but said it was consensual.

The Associated Press does not typically name people who say they were sexually assaulted, but Mitchell has said she wants to make the allegations public.