Birgitta Jonsdottir told media the U.S. Justice Department has subpoenaed her Internet records relating to Twitter postings since Nov. 1, 2009, The Guardian reported Saturday.
The newspaper said in 2009 Jonsdottir, who also is a WikiLeaks volunteer, invited WikiLeaks co-founder Julian Assange to a party at the U.S. Embassy in Reykjavik.
However, Jonsdottir has since distanced herself from Assange and his project, the newspaper said.
Meanwhile, she slammed the U.S. Department of Justice for its bid to obtain her personal postings on the Twitter Web site pertaining to the WikiLeaks releases.
"It is completely unacceptable for the U.S. Justice Department to flex its muscles like this," she said. "I am lucky, I'm a representative in Parliament. But what of other people? It's my duty to do whatever I can to stop this abuse."