Denial about being arrested (6)
I believe the answer is:
nailed
'being arrested' is the definition.
(I've seen this before)
'denial about' is the wordplay.
'about' indicates anagramming the letters.
'denial' is an anagram of 'NAILED'.
(Other definitions for nailed that I've seen before include "Fixed with pins" , "Denial (anag.)" , "not allowed to escape?" , "Firmly attached -- arrested" , "Attached by means of a pointed piece of metal" .)