NYT:

there were signs on Wednesday that the authorities were preparing to deepen a crackdown on the way news about the protest is being spread. On Tuesday, the government revoked press credentials for foreign journalists and ordered journalists not to report from the streets. And on Wednesday, The Associated Press reported, the powerful Revolutionary Guards went further, threatening restrictions on the digital online media that many Iranians use to communicate among themselves and to send news of their protests overseas. In a first statement since last Friday’s vote, the Revolutionary Guards said Iranian Web site operators and bloggers must remove content deemed to “create tension” or face legal action, the A.P. said. Despite that warning, new amateur video surfaced outside of Iran on Wednesday, apparently showing a government militia rampaging through a dormitory area of Tehran University late Tuesday or early on Wednesday. Reuters reported, meanwhile, that Mohammadreza Habibi, the senior prosecutor in the central province of Isfahan, had warned demonstrators that they could be executed under Islamic law. “We warn the few elements controlled by foreigners who try to disrupt domestic security by inciting individuals to destroy and to commit arson that the Islamic penal code for such individuals waging war against God is execution,” Mr. Habibi said, according to the Fars news agency. It was not clear if his warning applied only to Isfahan or the country as a whole, Reuters said.