Story highlights The Department of Justice said that Mohamad Bailor Jalloh tried to assist the group get weapons

Jalloh will remain detained until his next court appearance next Tuesday

New York (CNN) A former member of the National Guard was arrested Sunday for allegedly attempting to assist ISIS.

The Department of Justice said that Mohamad Bailor Jalloh tried to assist the group get weapons "to be used in what he believed was going to be an attack on U.S. soil" on behalf of the organization.

Jalloh, 26, made his first appearance in federal court in Virginia on Tuesday afternoon. He was flanked by three U.S. Marshals and spoke only to acknowledge that his lawyer was Ashraf Nubani. He did not enter a plea and Nubani did not comment.

Jalloh will remain detained until his next court appearance next Tuesday.

According to the Justice Department, Jalloh first came to the attention of authorities after an ISIS member who has since died brokered a meeting between him and a so-called "confidential human source" working on behalf of the FBI.

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