If it’s on the freeway/highway that’s DPS the State Troopers. If you called my agency the call takers would transfer you to DPS for the report. The call taker would probably send the information to the dispatcher for the district for an Attempt To Locate. If our helicopter is up they’d try to find it and if they did they’d switch to DPS channels for the stop.
In Arizona a non injury hit and run is a class three misdemeanor which is the lowest. If you aren’t the victim I’m not sure if DPS is taking a report. If they did it’d probably be an information report with no follow up unless the victim reported it later.