Washington (CNN) The FBI on Thursday arrested an Iraqi-born American citizen in Texas, alleging he traveled to Syria to fight with ISIS terrorists and returned to the U.S.

The case against Bilal Abood is one indication of federal counterterrorism officials' new stance on terrorism cases in light of the recent foiled terrorist attack in Garland, Texas, against a Mohammed cartoon contest event.

Prosecutors charged Abood with lying to the FBI, but the case represents much more. Abood is one of hundreds of people the FBI is monitoring in some way, many of whom investigators suspect could be motivated to carry out attacks but though the evidence remains difficult to assemble.

Abood, who formerly worked as an interpreter for the U.S. Army in Iraq, migrated to the U.S. in 2009.

The FBI alleges that agents stopped Abood as he tried to travel in 2013, when he claimed he was planning to visit family in Iraq.

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