We will probably never know.
"In mid-February, the United States expelled the U.N. correspondent of the official Iraqi News Agency, Mohammad Hassan Allawi. Last June U.S. officials expelled a first secretary at Iraq's U.N. mission.
Allawi, 38, had been the INA correspondent at the United Nations for two years. He lived in Manhattan with his wife and five children, aged 8 to 16, who attend New York public schools. The U.N. Correspondents Association protested his expulsion to Secretary of State Colin Powell and asked for an explanation, which it did not receive."
- from
http://www.reuters.com/newsArticle.jhtml;jsessionid=443WYREUXI1P4CRBAEKSFFA?type=topNews&storyID=2333302
We will probably never know. We might after the smoke settles in Baghdad, unless revealing what they were up to would compromise sources, etc.