I'm not sure they were implying that the crime itself was committed across borders. My interpretation was that they are emphasising that the act of interfering

I'm not sure they were implying that the crime itself was committed across borders. My interpretation was that they are emphasising that the act of interfering with a TV broadcast is actually a crime around the world - something that may be overlooked because of how ridiculous (and potentially humorous) this event was, especially upon reflection.