Police confiscated work-related items from my car, should I speak to my manager about it?

This is kind of a weird situation but I'd like some advice on how I should handle this. I apologize that it's a little long, but it'd be hard to make sense of it if I cut down the story any further.

Last night I parked in a vacant lot just to set my GPS to get me home from a different city and I figured it'd be quick so I didn't think too much about it but I guess I really wasn't supposed to be parked there. It turned into a big situation because I had dog vaccine and a couple of syringes on my back seat - I had mistakenly left them in my pocket at work(animal shelter) and didn't realize it until I had left for the day. I did not return them to work because they have to be refrigerated until use so by being in my pocket all day they were nothing more than trash at that point, something which happens pretty frequently between all the staff. I tossed them back there and totally forgot about them.

I tried to explain this to the officer, but he wasn't hearing it and after clearing his initial assumption that it was for drug-use and showing they were not illegal to possess he made some comments that implied he thought I was stealing these items from my job. He asked if he were to call my job and speak to a manager there if they would say I was allowed to have these items in my possession and I told him yes, that we are constantly using these items for our job and I had just forgotten them in my pocket. He told me that wasn't what he asked, then walked back to his car and wrote down all the information from my driver's license and my employee ID badge as well as my phone number on a notepad.

After proving I had nothing on me or in my car he returned my items but took the vaccine and syringes saying they did not belong to me, then told me to get out of town - I did not get any warnings/tickets or anything.

With some of the things the officer said & did, some of the assumptions he seemed to make and what information he wrote down, it seemed like he was intending to contact my job about me having those items. Is this a likely thing an officer would do? I had been pulled over for a broken headlight before with those items in my car and while there was initial suspicion, I am relentlessly polite and cooperative and once I explained and showed it was work-related it was not an issue at all. I have no idea why this officer made it into a big situation or what to expect out of it.

Because of this I was thinking about talking to my manager on Monday to explain what happened and the whole situation just in case the officer does contact my job, I would have already taken responsibility and nipped it in the bud, dismissed any false assumptions the officer may have and made the situation clear with my manager. Plus I could offer to make a donation to cover the cost of the wasted vaccine&syringes(worth no more than $2) so that if it were to reach any 'higher ups' my manager could easily say it was already handled. My manager would probably give me a weird look, but I'm sure she'd understand and wouldn't think it was a big deal at all.

Any opinions on the whole situation? How likely is it that the officer will contact my place of employment? Do you think my plan of talking with my manager first thing Monday would be best in case the officer does contact my work?

Thank you for any feedback