From the Richmond Whig, 12/31/1864, p. 2, c. 6

FATAL ACCIDENT AT THE LIBBY. - A Yankee prisoner at the Libby was yesterday morning killed by the accidental explosion of a musket in the hands of Colonel Spencer, Brigade Inspector of General P. T. Moore's Reserves. The Colonel was inspecting the weapon in the basement of the Libby, when it exploded, driving the bullet with which it was loaded and the iron ram rod which was in the barrel through the floor over head, and into the body of a prisoner who was sitting on the floor. The prisoner died in a very short time. We could not learn his name.