David Irving was picked up in Hartberg after police received a tip that he was in the country, the Times of London reported. He had gone to Austria to address a far-right group.
Irving was considered a serious historian of the Nazi era until 1988, when he first emerged as a Holocaust denier. In 2000, he lost a libel suit in London when a judge found that he had falsified history. He has also been fined in Germany.