Washington, D.C. ? The Obama administration on Friday accused an analyst who worked at the State Department of leaking top secret information about North Korea to a reporter.

Steven Kim, who worked at State as an employee of a contractor, maintains his innocence.

He was named in a federal indictment unsealed Friday and charged with illegally disclosing national defense information, which carries a top penalty of 10 years in prison, and with making false statements to the FBI, which has a maximum five-year sentence.

It was the latest move in an aggressive campaign to crack down on leaks, even as the administration has supported proposed legislation that would shield reporters from having to identify their sources.

Recent disclosures to news media have revealed the potential for using CIA drones in the counterterrorist fight against al-Qaida in Yemen, the close relationship of the CIA station chief in Kabul with Afghan President Hamid Karzai and the CIA’s practice of paying some members of the Afghan government for information.