 The bomb factory was set up in a townhouse owned by Wilkerson's father.On the morning of March 6, 1970, there was an explosion in the sub-basement of a townhouse owned by Wilkerson's father, located at 18 West 11th Street in Greenwich Village.The blast killed three people, but Wilkerson and Kathy Boudin were helped from the rubble, and they immediately went underground.