You would have to know what state and what county he was arrested in. Then you can narrow down your search. Try vinelink.com to start.
https://www.inmateaid.com/ask-the-inmate/my-ex-fiance-was-arrested-for-an-outstanding-warrant-3-years-ago-and-need-to-know-where-he-is-i-39-m-afraid-of-him-finding-me-how-do-i-find-out-where-he-is#answer
Accepted Answer Date Created: December 18,2019