He doesn't have any evidence.... he was just saying that to prove how mahan the Maoists are and dangerous the king is. We all know it is just another lie by the great maoists who thinks nepali janata are stupid eenough to belive whatever he says. he might have thought he would get away with saying anything he wants.. blame anyone he wants.. and nothing will happen to him.. everyone will belive him.. but good thing the US embassy foiled his ignorance.