Iran plans to switch its citizens onto a domestic Internet network in what officials say is a bid to improve cyber security but which many Iranians fear is the latest way to control their access to the web.
The announcement, made by a government deputy minister, came as state television announced Google Inc's search engine and its email service would be blocked "within a few hours".
"Google and Gmail will be filtered throughout the country until further notice," an official identified only by his last name, Khoramabadi, said, without giving further details.
The Iranian Students' News Agency (ISNA) said Google ban was connected to the anti-Islamic film posted on the company's YouTube site which has caused outrage throughout the Muslim world. There was no official confirmation.