Iran's leaders allegedly prohibited Iranian newspapers and news agencies from mentioning opposition leaders in a media directive, posted on pro-reform websites Thursday.
The document requires Iranian media to shun any coverage of the former president Mohammad Khatami and the former presidential candidates Mir Hossein Mousavi and Mahdi Karroubi.
Iranian authorities have not commented on the letter. It was not possible to independently verify its authenticity Thursday.
If true, however, it's another step by Iran to control the media after closing nearly all reformist publications and putting curbs on the Internet.
But it would actually change little since pro-government media have dropped most coverage of the opposition.