I was going to ask the same thing, it seems to me that Robert Manne is not an islamic name, but that doesn't mean much. However, he is supposed to be receiving communion which makes me wonder if you are correct about the details. Also, it looks like it's in Africa to me, but you never know.
It looks like it happened in Liberia. They liked executing people tied to a telephone pole, with the sea as a backstop.
