An Iranian regulatory agency announced a new set of guidelines Tuesday that it says are designed to ensure “objectivity” in Iran’s domestic media.

The move appears to be the latest in a series of measures aimed at reining in the local and international press, after contested June 12 presidential elections and the sometimes-violent clashes between demonstrators and authorities that followed.

In the aftermath of the vote and amid massive protests, Iran clamped down on international and domestic journalists, refusing to extend visas and eventually forbidding correspondents from attending unapproved gatherings or news conferences. Regime officials also rounded up scores of local journalists, and have accused the foreign media of inciting violence or working as agents of foreign governments during the unrest.

Forty-one journalists and bloggers are being held by authorities in the Islamic Republic, according to media watchdog Reporters Without Borders. Iran expelled the British Broadcasting Corp.’s correspondent in Tehran, Jon Leyne, and has held Iranian-Canadian reporter Maziar Bahari, who has reported for Newsweek, in detention since mid-June.