Mention reported location (4)
I believe the answer is:
site
'location' is the definition.
(site is a kind of location)
'mention reported' is the wordplay.
'mention' becomes 'cite' (to cite is to mention or quote).
'reported' shows a homophone (sound like).
'cite' sounds like 'SITE'.
(Other definitions for site that I've seen before include "Area set aside for building" , "Location or piece of land" , "Locale" , "Building land" , "Position for the building sounds visual" .)