A Valencia man is facing charges related to the acquisition of a firearm and ammunition with an intent to commit a federal crime of terrorism on behalf of ISIS.

FBI agents took Jonathan Hunter Kramer, 21, into custody this weekend as he returned to a Cranberry Township hotel in possession of three 30-round capacity rifle magazines and five boxes of rifle ammunition, according to a criminal complaint from the U.S. Department of Justice.

The complaint indicated Hunter bought firearms and ammunition at the Walmart in Gibsonia and was then seen at the firearm counter in Dunham’s Sports.

FBI agents arrested him as he was returning to Cranberry Park Hotel in Cranberry Township Sunday, Sept. 13, where they discovered three 30-round capacity rifle magazines and five boxes of rifle ammunition in his possession.

A search warrant obtained for his room at the hotel uncovered an additional semiautomatic rifle and ammunition.

“Kramer was arrested just as he appeared to be preparing for a mass shooting that could have taken many lives, having already secured a rifle and about 190 rounds of ammunition for what he called his ‘mission,’” said Assistant Attorney General for National Security John Eisenberg. “His apparent ISIS inspiration and escalation toward violence show how close this country came to a devastating attack. This arrest prevented what could have been a horrific tragedy.”

He was arraigned Sept. 14. in U.S. District Court and held without bond pending trial.

This is a developing story.