14th Street between D and Constitution Avenue is shut down as are parts of Independence Avenue, SW this afternoon after a gunman walked into the Holocaust museum at 1p.m and opened fire at the entrance.
A security guard at the entrance returned fire but was shot. He was taken to GW Hospital in grave condition. The assailant was also taken to the hospital and is listed in critical condition.
According to federal sources, the suspect is 89-year-old James Whittaker von Brunn from Maryland. It is understood this afternoon that the assailant has ties with a white supremacy group.
More on this story as it develops.