Madonna G. Constantine, the former professor of psychology and education at Columbia University’s Teachers College who was fired following allegations of plagiarism, has sued the university seeking reinstatement, the New York Daily News reported. University officials declined to comment to the newspaper about the lawsuit.

In a complaint filed on Friday in a state court, Ms. Constantine alleges that rivals within Teachers College manufactured the plagiarism allegations, the Daily News reported, and that she was the victim of “extreme bias” from the law firm the university hired to investigate the allegations.

That firm concluded after an 18-month investigation that Ms. Constantine had plagiarized the work of two former students and a former colleague. In an interview with The Chronicle last February, after the law firm’s findings were publicized, Ms. Constantine, who is African-American, said that it was her accusers who had stolen her work, and that the university’s investigation of her was racially motivated.

Several months earlier, Ms. Constantine reported finding a noose outside her office door. In her interview with The Chronicle, she said she believed someone in Teachers College had placed the noose there. —Charles Huckabee