City prosecutor's conclusion ignored by different tribunals (8)
I believe the answer is:
istanbul
'city' is the definition.
(Istanbul is an example)
I don't understand how the remainder of the clue works.
(Other definitions for istanbul that I've seen before include "City - lab units (anag)" , "City straddling the Bosporus" , "Former Turkish capital" , "It used to be named Constantinople" , "Modern Byzantium" .)