Guys and Gals,
They don't have any "security guards" there. As you enter the Tomb there are some Tour guides. They do tell you that you should talk in a low voice and be respectful as you pass throught the tomb. I am wondering if he was playing with it inside the tomb and one of the guides took it from him. I agree they should have returned it when he left.
Just a thot.
By the way, all of the family except for Robert are buried there.