An American who joined ISIS was charged in federal court Thursday with providing support to the terror group.

Mohamad Jamal Khweis, 26, who grew up in Virginia, is the first ISIS-affiliated American to have been captured on the battlefield.

He appeared in court in Alexandria, Virginia, with family members and heard the charges he is facing. He didn’t speak during the hearing and will be held at least until another hearing later this month.

Khweis’ lawyer, John Zwerling, said after the hearing it was “too early to say” how his client would plead.