James von Brunn, the man accused of opening fire on the Holocaust Museum in Washington, D.C., in June, fatally shooting a security guard, has died in prison, Fox News is reporting. He was 88.

A government official speaking on the condition of anonymity told Fox News Von Brunn died at a federal complex in Butner, N.C.

He had been awaiting trial for the killing of security guard Stephen T. Johns.

A pending psychiatric evaluation was continually complicated by Von Brunn’s chronic medical problems, a prison official previously told Fox. The World War II veteran, who served in the Navy for about 14 years, had ties to the white supremacist movement and had written racist and anti-Semitic comments on the Web prior to June’s shooting.

Von Brunn served more than six years in prison after a 1981 bid to abduct Federal Reserve Board members at Fed headquarters. A guard captured him outside the room where the board was meeting. He had a revolver, sawed-off shotgun, and knife in a bag with him.

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