SANTA ANA, Calif. (AP) — A psychology professor on Friday pleaded guilty to voluntary manslaughter in a deal with prosecutors for the 1995 killing of a man she says raped her.

Norma Patricia Esparza, 40, entered the plea in Orange County Superior Court in exchange for a six-year prison sentence and agreement to testify in the trial of two other suspects in the killing, said defense attorney Jack Earley.