His bones were found during an archaeological excavation on the island in 1915. Béla was buried in the Dominican monastery of the nuns by the will of his sister and the royal court. A biological anthropologist examined the bones and while he didn't make any publications he made notes and gave some data to a journalist for an article. For a long time everyone thought the skeleton was lost during WWII but they were in the Hungarian Natural History Museum among many tens of thousands other skellies but someone stumbled upon it this year. There's a little fly in the ointment: the skull with the jaw were lost, only a gypsum copy of the skull (but not the jaw) left. Some vertebrae are also missing.