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(NEWSER) – A Chicago-area teen who federal agents say was trying to travel overseas to join ISIS was arrested at O'Hare International Airport on Saturday evening, reports the Chicago Tribune. Nineteen-year-old Mohammed Hamza Khan, who CNN notes was flying to Turkey, is charged with attempting to provide material support to a foreign terrorist group, the US attorney's office said today.

The feds found pro-ISIS materials in Khan's home, including a letter to Khan's parents in which he railed against the "immoral" West and said "I do not want my kids being exposed to filth like this." A drawing appeared to show an ISIS fighter with a flag and the Arabic words, "Come to jihad." Khan, who the AP describes as "slight" and "bearded," appeared in court this morning; he'll be held until a detention hearing Thursday. The Tribune has a PDF of the federal complaint against Khan here.

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