Prof Jason Arday said he was not a liar after accusations of plagiarism emergedThe University of Cambridge professor at the centre of a plagiarism row has resigned "with immediate effect". Earlier, the university said it had launched an investigation "following new information" about Arday's "academic qualifications and honorary appointments". Earlier on Wednesday, the university said its inquiry had begun "following new information" about Arday's "academic qualifications and honorary appointments". On Saturday, Arday told the Times in an interview that he was accountable for those mistakes, but that "what I am not is a liar". Arday told the Guardian that the £5m was raised with the help of others over a 20-year period, but said he could not name these people as he had signed non-disclosure agreements.