Two Iowa men suspected of plotting to attack the Pokemon World Championships in August will be arraigned today in a Boston courtroom.

Kevin Norton, 18, and James Stumbo, 27, have been held without bail on firearms charges since their arrests on Aug. 22 after police found guns and hundreds of rounds of ammunition in the car the two drove to the Boston event. Prosecutors say they made multiple online threats against the Pokemon World Championships, which they'd been invited to attend.

After Norton and Stumbo were barred from from entering the Hynes Convention Center, where the event was being held, police spoke with the two and obtained a search warrant for Norton’s 2002 Chevy Prizm. There they discovered a 12-gauge Remington shotgun, a DPM5 Model AR-15 rifle, hundreds of rounds of ammunition and a hunting knife. Norton and Stumbo were later arrested at their motel in Saugus, north of Boston.

A judge on Sept. 1 ordered the two held without bail for four months, determining they were too dangerous to be free while they awaited trial. Norton's attorney argued at the hearing that the defendant weren't armed when they were stopped at the convention center, saying, “If they really had the true intent to do anything about it, why leave [the weapons] in the car? It’s absolutely possible, but it’s mere speculation that this vague bravado talk on Facebook was going to be carried out.”

However, Suffolk County Assistant District Attorney Joseph Janezic insisted they weren't "mere keyboard commandos," but instead possessed the capabilities to carry out their alleged online threats.