Akram Musleh, was arrested by the FBI agents while attempting to board a bus from Indianapolis to New York, where he was to fly to and transit through Morocco on his way to ISIS-controlled territory, the Department of Justice said.
The criminal complaint alleges that he planned to provide personnel (himself) to ISIS.
"According to the complaint, Musleh attempted to travel overseas to join ISIS and to provide material support to the designated terrorist organisation," said Assistant Attorney General John P Carlin.
"The radicalisation of American citizens by terrorist organisations like ISIS is a threat to our safety here and abroad," said US Attorney Josh Minkler.
If convicted, Musleh faces a maximum sentence of 20 years in prison, a lifetime of supervised release and a USD 250,000 fine.