The sheets were placed there probably to keep the media from putting out pictures of two decomposing bodies. That would be horrible for the families to have those kinds of pictures plastered on t.v. or in the papers. I'm sure there were reporters and cameras trying to get closer, but those pics were probably shot with a telescoping lens. I can't imagine them allowing them to get very close, they won't normally let them stomp around at a crime scene, because they're gathering evidence. Who knows? Somebody could find something that could identify the perp. A cigarette butt, an empty coke can, a handkerchief, maybe a discarded shirt.