Alebbini was arrested in January for unlawfully entering a Turkish embassy in Washington D.C., according to a 20-page affidavit filed in federal court. He said he wanted to speak with the Turkish ambassador about conflict in the Middle East.
The charges were dropped.
During an interview with federal agents shortly after the incident, Alebbini criticized the embassy's security for being lax, according to an affidavit. He said: "If I had a bomb on me, I swear to God, three embassies would have gone down."
While being interviewed by authorities, Alebbini admitted to supporting ISIS's desire for a united Middle East, but disagreed with their violent tactics, the sworn statement reads.
He also told agents he read ISIS magazines and posted ISIS propaganda on his Facebook page before it was taken down.
Court documents show Alebbini allegedly watches ISIS videos "all the time" and he believed the right place to be, from a religious point of view, was with the Islamic State.
Authorities say Alebbini destroyed anti-ISIS literature that was being handed out at a mosque.
The FBI let Alebbini go and continued to conduct surveillance on him via a paid informant who regularly met with Alebbini.
On March 2, the FBI contact Alebbini about him moving from Virginia to Dayton to be with his wife.
During the phone interview, Allebbini offered a follow-up interview with the FBI in person.
Agents did no seek to contact him again and did not revoke his travel rights.