Mohamed Elshinawy, 30, appeared yesterday before a federal magistrate in Baltimore after being arrested Friday.
Elshinawy, also known as "Mojoe" or "Mo Jo," consented to detention pending trial. No arraignment date was set.
Elshinawy is charged with trying to provide material support to a foreign terrorist organisation, obstruction of agency proceedings, and misleading investigators by making false statements and falsifying or concealing material facts. He faces up to 31 years in prison if convicted on all counts.
According to an FBI affidavit, Elshinawy began communicating through social media with a childhood friend in Egypt earlier this year and pledged his allegiance to the Islamic State group in February.
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"He stated that he was a soldier of the State but was temporarily away," FBI agent David Rodski said in an affidavit.
Elshinawy subsequently received at least USD 8,700 from individuals he understood to be associated with the militant group, at one point pretending to sell printers on eBay as a cover for payments he received through Paypal. Authorities say he also received a Western Union payment of USD 1,000 in late June from a person in Egypt.
"Elshinawy stated that he was instructed to use the monies he received from the unidentified ISIL operative for 'operational purposes,' which Elshinawy understood to mean causing destruction or conducting a terrorist attack in the United States," the affidavit reads.
According to the affidavit, Elshinawy used social media, multiple email accounts and "pay as you go" cellphones, often using pseudonyms, to communicate with people he understood to be associated with the Islamic State group.