WASHINGTON—Ten individuals pleaded guilty today in Manhattan federal court to conspiring to serve as unlawful agents of the Russian Federation within the United States and will be immediately expelled from the United States, the Justice Department announced today. In hearings today before Judge Kimba M. Wood in U.S. District Court for the Southern District of New York, each of the 10 defendants arrested on June 27, 2010, pleaded guilty to one count of conspiracy to act as an agent of a foreign government within the United States without notifying the U.S. Attorney General. Under their plea agreements, the defendants were required to disclose their true identities in court today and to forfeit certain assets attributable to the criminal offenses.