Teachers College at Columbia University is suspending indefinitely Madonna Constantine, a professor who claimed she was the victim of a hate crime after an investigation began into allegations that she committed plagiarism.

In a letter sent out yesterday to Teachers College faculty, the college president, Susan Fuhrman, and dean, Thomas James, said the faculty advisory committee had rejected Ms. Constantine's appeal of the plagiarism charges. They said Ms. Constantine was suspended as of yesterday but that she is entitled to appeal the decision or request a hearing before the faculty executive committee.

The letter, obtained by The New York Sun from a source at Teachers College, said the faculty advisory committee upheld an 18-month investigation by a Manhattan law firm, Hughes Hubbard & Reed, which found that Ms. Constantine had plagiarized two dozen times works of two former doctoral students and a former colleague.

"During the months since the College levied sanctions against her," the letter said, "Professor Constantine continued to make accusations of plagiarism, including in at least one instance to the press, against those whose works she had plagiarized."...