The bodies appear to be fresh, so from what are the authorities trying to protect themselves by wearing masks?
See those flip-flops lying in the dirt? That's the very reason I don't wear them much. They are so damn difficult to keep on one's feet (especially during combat).
Francisco had vampire ears, and the one on his left side was a good half-inch higher than the one on his right. These clues point to the likelihood that he was one of the living dead, until he became dead dead. He'll be back though.