It turned out that a paper, published in 2009 by Iranian science minister Kamran Daneshjou has plagiarized a 2002 paper by W. Lee et al. Here is a blog post about it. Later, Nature published a long news article, where other cases of plagiarism are revealed.
This is not a very recent story, somehow: a month ago the Los Angeles Times was doubting the validity of Daneshjou's PhD degree.
This is kind of popular among politicians: a few years ago Russian president Putin was accused in plagiarizing his PhD thesis.
P.S. According to Nature's new investigation there are two Iranian ministers involved.