Federal Bureau of Investigation (FBI) arrested two men in California on Thursday for allegedly conspiring to join ISIS.
The two men were identified as Muhanad Badawi and Nader Elhuzayel by FBI spokeswoman Laura Eimiller.
Elhuzayel was arrested late on Thursday at Los Angeles International Airport, and admitted planning to join ISIS, prosecutors said.
He had a ticket to Tel Aviv via Istanbul but the prosecutors claimed he was planning to forfeit his final destination to join ISIS.
The prosecutors said Badawi, who was arrested in Orange County on Thursday, was also planning to go to the Middle East in the future.
According to court documents, the two men were recorded talking to each other where they expressed their support for ISIS.
They are expected to appear in court for their first hearing on Friday and can receive up to 15 years of prison sentence if convicted of providing support to ISIS.
Six Somali-American men from Minnesota were arrested last month for planning to travel to Syria to fight for ISIS, as the US increased its efforts to detect Americans supporting ISIS.