Rahatul Ashikim Khan, 23, of Round Rock, was arrested in a separate case at his home and charged with "conspiring to provide material support to terrorists."
A complaint said Khan "conspired with others to recruit persons to travel overseas to support terrorist activities including committing violent jihad" during a period from early 2011 to January 2012.
"This case is the culmination of a long-term investigation by the FBI and the Joint Terrorism Task Force made up of local, state and federal law enforcement agencies in Central Texas. It's a textbook example of how well law enforcement agencies in this area work together," U.S. Attorney Robert Pitman said in a statement.
His office covers the western district of the state, including Austin and San Antonio.
The men are in federal custody and a detention hearing is set for 2:30 p.m. Friday before a U.S. magistrate in Austin. They face up to 15 years in federal prison and a maximum $250,000 fine if convicted.
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