Two men with ties to Aurora remain in custody on terrorism charges following arrests last week.

The U.S. Department of Justice charged the two men— including a National Guard specialist — for conspiring to provide material support to Islamic State of Iraq and the Levant, a foreign terrorist organization commonly known as ISIL.

Army National Guard Specialist Hasan Edmonds, 22, a U.S. citizen, was arrested without incident at Chicago Midway International Airport by members of the Chicago FBI’s Joint Terrorism Task Force while attempting to fly to Cairo, Egypt.

Jonas Edmonds, 29, a U.S. citizen, was arrested without incident at his home in Aurora.

“According to the charges filed (March 25), the defendants allegedly conspired to provide material support to ISIL and planned to travel overseas to support the terrorist organization,” said John P. Carlin, Assistant Attorney General for National Security. “In addition, they plotted to attack members of our military within the United States. Disturbingly, one of the defendants currently wears the same uniform of those they allegedly planned to attack.”

The men were said to be cousins and separately once attended West Aurora High School. According to published reports, Hasan Edmonds graduated from West in 2011 while Jonas Edmonds left the school in 2004, his senior year.

Both defendants were charged in a criminal complaint filed in U.S. District Court of the Northern District of Illinois with one count of conspiring to provide material support and resources to a foreign terrorist organization.

As alleged in the complaint, in late 2014, Hasan Edmonds came to the attention of the FBI. The investigation subsequently revealed that he and Jonas Edmonds had devised a plan for Hasan Edmonds to travel overseas for the purpose of waging violence on behalf of ISIL.

Hasan Edmonds, a current member of the Illinois Army National Guard, planned to use his military training to fight on behalf of ISIL. As part of their plans, Hasan Edmonds booked airline travel to depart Wednesday from Chicago and arrive in Cairo Thursday, with layovers in Detroit and Amsterdam.

Both defendants also allegedly planned for Jonas Edmonds to carry out an act of terrorism in the United States after Hasan Edmonds departed.

Both defendants met with an FBI undercover employee and presented a plan to carry out an armed attack against a U.S. military facility in northern Illinois, an installation where Hasan Edmonds had been training.

Hasan Edmonds was reported to be a supply specialist with the Joliet-based 634th Brigade Support Battalion.

It was not known if the Joliet armory was the intended target. But an statement put out by authorities stated that Hasan Edmonds asked the FBI undercover employee to assist in the attack and explained that they would use Hasan Edmonds’ uniforms and the information he supplied about how to access the installation and target officers for attack.

Aurora Police aided the FBI, U.S. Customs and Border Protection, U.S. Immigration and Customs Enforcement’s Homeland Security Investigations and the Illinois State Police in making the arrest.

Conspiring to provide material support to a foreign terrorist organization carries a maximum penalty of 15 years in prison and a $250,000 fine. If convicted, the court must impose a reasonable sentence under federal statutes and the advisory U.S. Sentencing Guidelines.