French Interior Minister Christophe Castaner (center) and Paris Fire Brigade Commander General Jean-Claude Gallet (center right) exit the Notre Dame Cathedral. French investigators probing the devastating blaze questioned workers who were renovating the monument, as hundreds of millions of euros were pledged to restore the historic masterpiece.

French Interior Minister Christophe Castaner (center) and Paris Fire Brigade Commander General Jean-Claude Gallet (center right) exit the Notre Dame Cathedral. French investigators probing the devastating blaze questioned workers who were renovating the monument, as hundreds of millions of euros were pledged to restore the historic masterpiece.