U.S. investigators uncovered a global financial network run by a senior Islamic State official that funneled money to an alleged ISIS operative in the U.S. through fake eBay transactions, according to a recently unsealed FBI affidavit.

The alleged recipient of the funds was an American citizen in his early 30s who had been arrested more than a year ago in Maryland after a lengthy Federal Bureau of Investigation surveillance operation that found the first clues to the suspected network.

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