Yup. A number of years ago when I was going through my separation and divorce and my ex and I were still living in the same house, albeit in a rotating nesting arrangement - one time I thought she was out of the house (as she should have been on the schedule) and I came home from shooting and my range bag and ammo case were in the trunk of my SUV. I went inside to use the washroom before bringing my stuff in. I had no idea the ex was in the house. I was out of my car for maybe 5-7 minutes and the car was parked in my driveway. In that time she went into my car, into my range bag and snopped around and took out a magazine which had rounds in it (guns was all locked in hard cases with trigger locks on them as well). When I got out of the washroom to go back to the car, there she was in my sUV hatch/trunk going through my stuff and I told her to get out as it wasn't her time in the house, and she did.
Days later I get a call from the police that they want to see me. I go in and they produce the pistol mag with the rounds in it and said your ex found this lying on the floor. I said absolutely lies - I always take my range bag and ammo case directly back into the house after shooting. In this one case I had to go to the washroom and so I did and came back out to get my stuff. Ex should not have been there. Cop said she said it was on the floor. I told him honestly how stupid does that sound? I am going through a contentious divorce - I am very careful and lock everything up. But then the cops tell me ex said I did not own a handgun and so what was I doing with this pistol mag. I told him there are PCCs that shoot pistol mags. This guy (older detective guy) had no idea what a PCC was and had to look it up on the internet. In the end, I got my mag back but it's a lesson learned to never even for a second, leave your gear unattended, even if you don't think anyone was around. Yes, I could have locked the SUV when I went into the house, but it was only for a few minutes while I had to do a number 2, and there wasn't supposed to be anyone in the house anyway. Lesson learned.