The official Twitter account of the U.S. Secret Service posted a tweet on Wednesday afternoon that blasted Fox News.
"Had to monitor Fox for a story. Can't. Deal. With. The. Blathering," the tweet said, before being deleted almost immediately, according to the Huffington Post.
"An employee with access to the Secret Service's Twitter account, who mistakenly believed they were on their personal account, posted an unapproved and inappropriate tweet," Secret Service Spokesman Edwin M. Donovan told CBS News.
"The tweet contained no vulgarity, security or pertinent agency information," he continued. "The tweet did not reflect the views of the U.S. Secret Service and it was immediately removed. We apologize for this mistake, and the user no longer has access to our official account."
The US Secret Service made its debut on Twitter on May 9, saying the account would provide information about security on presidential visits and other high-profile events.
"The Internet is a valuable resource for people all over the world," said Secret Service Assistant Director Mickey Nelson.
"By using social media sites, we hope to supplement our recruitment efforts, while providing an informative, helpful tool to businesses and individuals who are interested in information from our agency."
Updated May 18, 2011 at 7:50pm EST to include Secret Service statement.