Prosecutors say a former linguist for the FBI has pleaded guilty to leaking classified documents to a blogger who posted the information online.

Officials say 39-year-old Shamai Kedem Leibowitz of Silver Spring, Md., admitted giving secret documents to the unidentified host of the Web site.

Under a plea deal Thursday in federal court in Greenbelt, Md., Leibowitz is expected to receive a prison term of one year and eight months.

The FBI says Leibowitz held a top security clearance for his work as a linguist, and in April of this year gave the blogger documents about U.S. communication intelligence activities.

Officials would not say what the information was or where it appeared online.