Contacted Former Employer For Last Paycheck Not Coming Through, Says Im Under Police Investigation

Hey so im confused.

Location: AZ

So i worked for this company for a month. Owner took a chance on me knowing I didnt have a lot of experience, and even though I was willing to learn (and learned a lot) I just couldn't live up to expectations. I get it, he deals with the rich richies and whatever.

I drove a company truck - front dashcam that films the road and in the cab. When he fired me He ended up driving me to a family members house where my personal vehicle was (getting fixed) with that truck so I can get all my personal stuff out of it and do inventory to make sure all company property was present.

Yep. Everything there.

Well work uniform - it was 5 t shirts. It was a friday after my workday that he fired me so I told him I could wash them and drive up to him (40 min away) since they were at my house and not where he dropped me off - and I was still wearing one.

Okay cool all good. Messaged him Sunday morning confirming everything. Washed/dried, dropped them all off to him. Everything is good.

My normal pay day is Sunday- usually late at night. Nothing showed up. This was our text exchange after he didnt answer my call:

Me: screenshot of past deposits from the company with it missing the most current one hey man my last paycheck never came through

Boss: You are on a hold while the police finish the investigation on the shirts you returned. They are in their custody now and when it's complete, you will be contacted

Me: investigation on the shirts?

Boss: You are on a hold while the police finish the investigation on the shirts you returned. They are in their custody now and when it's complete, you will be contacted

Idk what they would even be investigating? I dont do any drugs - havent even smoked weed in like 8 months- and barely drink. Maybe he saw me vaping with all the windows down or something? Idk.

I just dont know what would be investigated or if he is just trying to withhold my money.

I will probably go to the labor board to complain either way, but i just want to know if this is legal? if it is a scam he's trying to pull to not pay me? or idk??? I just need money and there's literally nothing they are going to find