(Dear mods, please remove this if it's deemed unsuitable for this board.)

Basically, I'm currently living in a different time zone than my parents and I just received a phone call from my mother, who claimed that both herself and my dad witnessed a/some furniture moving on their own over the distance of a few metres.

I don't believe in the supernatural, although there's always this voice in my head that says, "what if you're wrong?" That's why I'm posting this here to get your opinion on the possible non-supernatural causes for furniture moving on their own.

Anyway, the details:

• It's 3am at her side of the planet when my mother called me. She woke up for a wee and she decided to call me and tell me about the supposed supernatural incident.

• When I asked her for details, e.g., which piece of furniture moved, she said she forgot. She didn't even tell me when it happened, time and date.

• Apparently, both my dad and herself saw the furniture move on its own from the living room to just outside another room and stopped on its own. That room has statues of the deities my mum prays to (she's religious and very superstitious), so she was convinced that that was the reason why the 'ghosts' didn't manage to move the furniture into the room (a forces of good vs forces of evil thing).

• Assuming that she didn't just have a very vivid dream, I could only think of vibrations as the cause for the furniture moving, but at the same time, for something so heavy to move such a distance, wouldn't the vibrations need to be earthquake-tier? I've checked online and there are no reports of earthquakes/tremors where my parents live.

I would like to call my dad to ask for more details, but he's most probably still asleep. If he did witness what my mum described, there's a 100% chance that he's also gonna attribute it to ghosts.

I'm gonna admit, I'm quite spooked by what I heard from my mum.

Does anyone have any non-supernatural explanations for the supposed haunting of my parents' house?

UPDATE Called my dad and he confirmed that no such thing happened. I guess my mum just had a very vivid dream and attributed everything to ghosts. Poor thing XD