Housemate thinks I took a video of her whilst she was in the shower.

So I’m living with my girlfriend at uni in our sports teams house. And one night I go to toilet for a number 2. Unbeknownst to me, my flatmate may or may not have been taking a shower and I don’t know myself if she was in the shower at the time or not. So, like normal I finish my business and get back to my gf in our room and we go downstairs to make food. Flatmate comes down talks for a little bit and goes back up. We then get a message on the house groupchat saying that there was a phone with a recording light that came under the door. Immediately me and my gf went to her and asked if she was alright and what happened. We both offered to show her our phones and camera rolls to prove it wasn’t us. She said she’s not bothered about going through peoples phones just wants to know what’s what. I admitted I went to toilet so my and my gf were out the room together which may have coincided with her in the shower. So we then searched the house barring one room and no one was else was in.

Since then ive heard from my gf who got told by the flatmate that the police will want to speak to me to “rule me out” but I believe I’m being made a suspect.

What can I do about this as I don’t have any evidence or proof that it wasn’t me other than some text that happened around that time.

I don’t know what to do and am fairly shook up that id be thought of like this and I do feel sorry for my flatmate that it’s happened to her. I don’t know what to do legally, can you please help me. Thank you in advance:).

EDIT: sorry for lack of responses, I’m at work at the min and will reply when I’m off. However thank you to those that have given advice already I really appreciate it and will address people concerns in the timeline too. But again thank you so much.