Who is Seth Chambers, ex-Marine Intel analyst indicted for leaking classified US defence information to China?

A former Marine Intelligence analyst from Texas County, Missouri, was indicted for transmitting national defence information. He allegedly shared classified documents with individuals in Maryland and China. The charges are allegations pending evidence presentation in a federal trial.

Garvit Bhirani
Published16 Mar 2026, 09:35 PM IST
The FBI headquarters is seen before the Senate Democrats' press conference opposing Kash Patel's nomination on 20 February 2025 in Washington, DC. (Getty Images via AFP)
The FBI headquarters is seen before the Senate Democrats' press conference opposing Kash Patel's nomination on 20 February 2025 in Washington, DC. (Getty Images via AFP)(Getty Images via AFP)

Seth Chambers, a man from Texas County, Missouri, identified as a former Marine Intelligence analyst, was indicted on Friday on two counts of wilfully transmitting national defence information. The indictment states that his official duties granted him security clearance and authorised access to classified material up to the top-secret level, giving him access to sensitive national defence information.

According to the US Department of Justice, the first alleged transmission took place on 10 December 2022, when he shared a white paper containing verbatim and near-verbatim excerpts from classified US government documents with an individual in Maryland. A second alleged transmission occurred on 20 April 2023, when he sent another document containing similar excerpts to a person believed to be in China, it noted.

Authorities emphasised that the charges outlined in the indictment are only allegations and do not constitute proof of guilt. The evidence must be presented before a federal trial jury, which will ultimately decide whether the accused is guilty or innocent, it said.

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“Former Marine Intel Analyst allegedly transmitted classified defense information on two occasions in 2022 and 2023… the second time, sent to someone believed to be located in China,” FBI Director Kash Patel said on X.

He added, “He was caught and has now been indicted.”

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Who is Seth Chambers?

Seth Chambers, 35, a former intelligence analyst with the United States Marine Corps, was working as a civilian contractor and posted in Iraq during the period mentioned in the indictment.

If found guilty under federal law, Chambers could face a prison term of up to 10 years without the possibility of parole on each count. The maximum penalty has been set by Congress and is mentioned for informational purposes, as the final sentence will be decided by the court after considering advisory sentencing guidelines and other statutory factors.

Also Read | What is ‘classified’ information? What are ‘secure’ communications? Explained

The case is being handled by Assistant US Attorney Jim Kelleher, along with Trial Attorneys Nicolas Hunter and Sean O’Dowd from the National Security Division’s Counterintelligence and Export Control Section. The investigation was carried out by the FBI’s Kansas City Field Office.

Ex-MI5 worker in spying case could access all internal systems

In related news, a former employee of Britain’s domestic intelligence agency MI5, accused of passing classified information to a foreign state, had access to virtually all internal systems available to staff, a London court was told on Friday, reported AFP.

Juan Joseph, 43, who worked as an IT contractor for MI5 for more than a decade, faces allegations of violating the Official Secrets Act and the National Security Act while pursuing grievances against his former employer.

Proceedings in the case are being conducted partly in private at London’s Central Criminal Court. A protected witness from MI5 informed the court that Joseph held the highest level of security clearance and could access “everything that MI5 staff would have access to” through staff desktop systems.

About the Author

Garvit Bhirani is a journalist based in Gurugram. He is a Deputy Chief Content Producer at LiveMint, where he covers national and international news stories, focusing on accuracy and compelling storytelling for readers. <br><br> With a total of six years of experience in journalism, he has previously worked with Vaco Binary Semantics for Google, taking on the role of news curation lead, and reported from the field on health, education, and agriculture stories for 101reporters and News9. He has also served as a content editor for entertainment and news media organisations. <br><br> Garvit holds bachelor’s and master’s degrees in journalism and mass communication from Guru Gobind Singh Indraprastha University and Gurugram University, respectively. During college days, he joined India’s only non-profit student journalism network, where he anchored daily news updates and produced his own weekly show called ‘Data Fix’. <br><br> He was selected for the YES Foundation Media for Social Change Fellowship in Delhi, the Talking Data to the Fourth Pillar residential workshop, and the VOICE Fellowship in Pune. <br><br> He holds certificates in COVID-19-verification reporting, data journalism, food & agriculture, tech policy, media literacy and countering misinformation, and tackling election disinformation courses from Thomson Foundation, IndiaSpend, The Dialogue, US Mission in India, and AFP. <br><br> He can be reached on <a href="https://www.linkedin.com/in/garvit-bhirani">LinkedIn</a> or on <a href="https://x.com/GarvitBhirani">@garvitbhirani</a> on X

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