Report by Technican Status Closure and Technician Unassigned

Report by Technican Status Closure and Technician Unassigned

Hi

I am trying to figure out how to run a report that shows :

Status Closue Code (Closed)  by Technician    AND
Unassigned  Technician

In other words who is closing tickets without Assigining themselves as Technicians.

Any thoughts on how to do this?

Regards
Sharlene