I thought a figure was mistakedly seen. Not sure how anyone can determine if it was a man or woman.
Anyway, it was determined as a trick of the light.
It probably -at the time- ran along the lines of
Jeremy. "What was that?"
Police. "What? Where?"
Jeremy. "In the bedroom. I think I saw something! Look! There it is again!! Can you see it?"
Police. "I can't be certain. Maybe it's a trick of light?"
Jeremy. "No, no! It could be someone moving"
Police. "Maybe you thought you saw something but there's nothing there now"
By the time it came to relaying it, no one could recall who said what. There had been a conversation but nothing concrete was established.