So I work a mechanic-esque shop. We've all got these jackets that have the company logo on it. And you can get them with or without your name on it as well.
Today, a coworker (let's call him Bob) put down his nameless jacket, and when he looked for it later, it was gone. Mysteriously, another coworker (let's call him Steve) happened to suddenly be wearing a nameless jacket that was the same style. When asked about it, Steve claimed it was his, and everyone was like "oh well. Jackets have a tendency to turn up sooner or later".
A few hours later while Bob was at lunch, I notice Steve leave what he was doing, grab "his" jacket, walk in the back aisle, and then come back out with no jacket.
So when Bob returned, I retraced Steve's steps to see if I could find the jacket. And sure enough, it was there. So at this point, Steve gets defensive and says "I don't know why you guys think I would steal Bob's jacket. I was putting my jacket in my locker" (for reference, the locker is in the completely opposite direction of where he was walking with the jacket).
So like...basically, we've got a team member lying about borrowing a jacket and then accusing us of having trust issues or something.
And I'm not entirely sure how to move forward here. Like, I could probably tell a manager, but like... it's a jacket. It's just so absurd to me that this whole thing even happened in the first place since most of us are more than willing to lend our jackets to coworkers since we all have a bad habit of leaving extras.
Edit: it should be noted that there is a sorta trend of things going missing in Steve's presence. Nothing definitive enough to where anyone would accuse him of stealing anything. But it does make people suspicious.
Edit2 (follow up): As a followup to this question (for anyone wondering) Other things went missing after this, and the coworker was again the one implicated.
Eventually, my boss asked a few of us to write a statement about things we've seen or heard, and I did so. The coworker has since been removed from our company. Turns out the jacket wasn't an isolated incident. Luckily, everything was handled later.