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Investigative Reporter

Matthew Mosk

Matthew Mosk is on ABC News. Get Matthew Mosk's latest news stories and articles, connect with millions of users and join the conversation at ABC News

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PHOTO: U.S. Marshals have been searching for John Ruffo since he vanished in 1998. Ruffo in an age-progression rendering.
U.S. Marshals

These clues hold the key to the 23-year manhunt of fugitive bank swindler

PHOTO: John Ruffo is seen here in an undated photo released by the U.S. Marshals.
U.S. Marshals

Inside the US Marshal manhunt for long-missing fugitive behind $350 million bank swindle

PHOTO: Russian analyst Igor Danchenko arrives at the Albert V. Bryan U.S. Courthouse before being arraigned on Nov. 10, 2021, in Alexandria, Va.
Chip Somodevilla/Getty Images

Durham probe offers fresh support for man who has long denied being 'Steele dossier' source

PHOTO: Igor Danchenko, a Russia analyst who gathered material for the Steele dossier, in Washington, D.C., Oct. 2, 2020.
Jonah M. Kessel/The New York Times via Redux

Feds charge Russian national who worked on Steele dossier with lying to FBI

PHOTO: Russian billionaire Oleg Deripaska speaks during day two of the Eastern Economic Forum in Vladivostok, Russia, Sept. 5, 2019.
Bloomberg via Getty Images, FILE

FBI searches NYC, DC properties in probe of Russian oligarch with ties to Kremlin

PHOTO: Christopher Steele, author of the so-called "Steele dossier," is filmed for the ABC News documentary, "Out of the Shadows: The Man Behind the Steele Dossier," airing Oct. 18, 2021.

Behind the dossier: Steele dismisses James Bond comparisons -- but dossier did leave his life shaken, stirred

PHOTO: Christopher Steele, author of the so-called "Steele dossier," talks to George Stephanopoulos in a scene from the ABC News documentary, "Out of the Shadows: The Man Behind the Steele Dossier," airing Oct. 18, 2021.

Behind the dossier: Christopher Steele not worried about facing charges in Durham investigation

PHOTO: Christopher Steele, author of the so-called "Steele dossier," is seen in a scene from the ABC News documentary, "Out of the Shadows: The Man Behind the Steele Dossier," airing Oct. 18, 2021.

Behind the dossier: How Christopher Steele penned his reports -- and the fallout from his unmasking

PHOTO: Christopher Steele, author of the so-called "Steele dossier," is seen in a scene from the ABC News documentary, "Out of the Shadows: The Man Behind the Steele Dossier," airing Oct. 18, 2021.

Out of the Shadows: Christopher Steele defiant on dossier, says Trump still 'potential' threat

PHOTO: Christopher Steele, author of the so-called "Steele dossier," talks to George Stephanopoulos in a scene from the ABC News documentary, "Out of the Shadows: The Man Behind the Steele Dossier," airing Oct. 18, 2021.

Confronting his critics, Christopher Steele defends controversial dossier in first major interview

PHOTO: John Ruffo is seen here in an undated photo released by the U.S. Marshals.
U.S. Marshals

US Marshals find, clear LA Dodgers fan who resembled fugitive John Ruffo

PHOTO: U.S. Marshals have been searching for John Ruffo since he vanished in 1998.
U.S. Marshals

'Have You Seen This Man?' podcast: The global manhunt for John Ruffo

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