After Thompson was arrested on February 27, she admitted to investigators that she passed the information on the informants, together with a warning for a Hezbollah-linked target of U.S. military intelligence, to a Lebanese national whom she had "a romantic interest in", according to the charges.
The information allegedly shared by Mariam Thompson, 61, included details regarding secret human assets working for the US and military personnel, prosecutors said.
Ms. Thompson is scheduled to make her initial court appearance later this afternoon in D.C. federal court, according to the Justice Department.
According to a main declaration, Thompson developed a "notable shift" in her use classified systems and also accessed "information she had no reason to access".
Thompson began to access the system, prosecutors say, one day after the USA carried out a series of airstrikes against Iran-backed forces in Iraq and on the same day that anti-U.S. protesters stormed the American Embassy in Baghdad.
"By compromising the identities of these human assets, Thompson placed the lives of the human assets and US military personnel in grave danger", the Justice Department said in a press release announcing Thompson's arrest.
Prosecutors said that when officials searched her living quarters, they found a handwritten note in Arabic concealed under her mattress with information about Defense Department computer systems and warning of a Defense Department target with ties to Hizbollah.
Court documents identify Thompson's co-conspirator as having apparent connections to the Hezbollah.
In another communication, Thompson allegedly transmitted information to her co-conspirator identifying another confidential human source and the information that individual had provided to the United States government.
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Federal Bureau of Investigation agents arrested Thompson in late February at an overseas US military facility, where she was employed as a linguist holding top secret security clearance. It was not identified. The group was designated as a foreign terrorist organization by the State Department in 1997.
US officials said the linguist, who had top-secret government security clearance, began repeatedly accessing classified information in Pentagon computer systems that she had no need to access on December 30.
She faces three charges of violating espionage laws. If convicted, Thompson faces a maximum sentence of life in prison.
One of the assets, the complaint continued, is affiliated with a designated terrorist organization that is not Hezbollah. Prosecutors stated Thompson had no want to entry such data.
In subsequent interviews with the FBI, Thompson she waived her Miranda rights and told the agents she had passed along the information from the note to a Lebanese foreign national, according to the statement. The document further alleged that a translation of the note revealed that it contained the names of three confidential human assets who were collecting information for the USA government and instructed that their phones should be monitored.
"The conduct alleged in this complaint is a grave threat to national security, placed lives at risk, and represents a betrayal of our armed forces", said U.S. Attorney Timothy J. Shea for the District of Columbia.
The information consisted of the names of human knowledge possessions, their real names, photos, and also cable televisions describing the information that resources given to the United States federal government.
The United States had launched these airstrikes in response to attacks by the group on the Iraqi Security Forces military base that killed an American contractor and several Iraqi troops on December 27th. "This betrayal of nation and colleagues will likely be punished", he added.