Detectives attending fight where vehicles broken (9)
I believe the answer is:
scrapyard
'where vehicles broken' is the definition.
'detectives attending fight' is the wordplay.
'detectives' becomes 'yard'.
'attending' means one lot of letters go next to another.
'fight' becomes 'scrap' (I've seen this before).
'yard' after 'scrap' is 'SCRAPYARD'.
(Other definitions for scrapyard that I've seen before include "recycling centre" , "Steptoes' place" , "Totter's tip" , "Place for metal refuse" , "Dump" .)