UPDATED, 5:12 p.m.: A security guard was shot and killed inside the U.S. Holocaust Memorial Museum in Washington, D.C., this afternoon. The gunman was 88-year-old James W. von Brunn, a known white supremacist. He walked into the museum with a rifle and opened fire. Guard Stephen Tyrone Johns was mortally wounded. Von Brunn was wounded and subdued by other guards, who returned fire. No one else was shot, and the building was evacuated. It will remain closed tomorrow

Security Guard Killed at U.S. Holocaust Memorial Museum [WP]