Al-Jazeera is scaling down its operation inside Iraq after two of its reporters were expelled by President Saddam Hussein's regime.
The Arab satellite channel interrupted a regular news report to announce the order from Iraq's Information Ministry.
Iraqi-born journalist Mr Diar al-Omari has been told to leave Baghdad; his colleague Mr Tayseer Allouni has been barred from working.
Al-Jazeera said the ministry did not give a reason and described the move as "sudden and unjustified."
It added: "Al-Jazeera has decided to suspend until further notice the work of all its correspondents in Baghdad, Basra and Mosul, while maintaining the broadcasting of live and recorded images received from its office in Baghdad".
Al-Jazeera representatives at the US Central Command in Qatar said about a half dozen journalists were in Iraq reporting for the station.
There was no immediate announcement of the move from Iraqi officials, who have taken similar actions against several Western networks.
Western critics have often accused Al-Jazeera of a pro-Iraqi bias in its war coverage.
AP