and he was standing on top of it. and that was once in beautiful condition. reporter: how old is that? it s 3,300 years old. reporter: two mummies were damaged. there were reports they may have been beheaded. this was on the mummy of tutankhamen s great-grandmother. reporter: there are reports of looting including one of egypt s ancient burial grounds. at the famous pyramids, closed now to tourists. experts are hopeful egypt has enough security forces to protect most of its history, literally millions of ancient artifacts. it s crucial to protect all the sites, but it s a very difficult job. and that was kate snow reporting for us. and we have other news developing now. mayor michael bloomberg in new york making an announcement about an undercover gun investigation. officials found that at an arizona gun show, private sellers didn t always require background checks of buyers. this is part of the bloomberg administration s efforts to make a dent in illegal gun sales