City of brigands? (4)
I believe the answer is:
riga
'city' is the definition.
(Riga is an example)
'of brigands?' is the wordplay.
'of' indicates a hidden word.
'RIGA' is hidden in the letters of 'brigands'.
(Other definitions for riga that I've seen before include "Capital city of Latvia" , "Fix a rig up here for the Latvians" , "European capital" , "A rig in Latvia" , "Baltic capital city" .)