I'm not going to claim that supernatural forces don't exist, but so far I haven't heard of a single supernatural event that hasn't been debunked or exposed.
90% of the time those "supernatural events" bring some sort of income to someone, whether it's on TV, YouTube, Netflix, you name it, and big demographic of people seem to enjoy that sort of content, so they have no reason to stop making these stories.
The rest 10% are usually really good art projects (or not so good) by few unknown film students or whatever that genuinely want to make it sound/look as realistic as possible and their goal is to make people believe in it so later they can put it on their resume as creating a viral video, and it reflects well on sites like YouTube where these "paranormal" videos have millions of views and seemingly majority of the comments believe in whatever is happening to be supernatural forces.
If you dig into any case for long enough you can start seeing inconsistencies in how the story is presented, and I'm sure it's the same case with the story that you're talking about. Some crime scene pictures probably got leaked long long time ago and someone just created a story behind it for one reason or another.