Police from former university told me to come in for questioning or else they would put a warrant out for my arrest, what is next step?

I was contacted by the police at my former university a few days ago. In April of last year, there was an incident where a kid from my floor broke off a bathroom stall door and threw it out the window into the woods. Me, my roommate, and a few friends were present during all of this. A few of my friends helped him take it off. If I remember correctly, I helped bring the door out to the window. So the cop tells me he needs me to come in by next week to answer questions or else he'll put a warrant out for my arrest. Should I call back and question his evidence? Could he just be saying this?