Interesting little story...

I can think of a couple of possibilities. Have you or anyone living near you done any renovations that could have stirred up a resting spirit? It could be a spirit passing through, you can ask them to move on. They usually can't stay if you don't allow it. Have you been under a lot of stress lately, sometimes that can stir up poltergeist activities? Have you been involved in or around any spiritual practices that involed calling out spirits?

Just a few possibilities...hope you find your answers.

nightowl