One's committed an offence (9)

I believe the answer is:

wrongdoer

(Other definitions for wrongdoer that I've seen before include "Trespasser" , "Dishonest or criminal person" , "Drown ogre, being a bad chap (9)" , "Person who acts immorally or illegally" , "Transgressor" .)

I've seen this clue in The Guardian.

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