Will I get arrested see below?

I was driving home from school and there were two people, cops I think, they were directing traffic. It looked like they were sending me past this one area, so I went over there. When I went further down it looked like a crime scene so I stopped. A cop came over to me and told me to turn around, I put the car in reverse and started headed back. When I got most of the way back two other cops pulled me over and stated giving me a hard time about being where I was at, but eventually they let me go. So is there a Warner out for my arrest, will I get arrested, what is going to happen to me?!