Crossword Genius

Outlaw returned four-poster, say, under arrest (6)

Ross

I believe the answer is:

nabbed

'under arrest' is the definition.
(nab can mean to capture or arrest)

'outlaw returned four-poster' is the wordplay.
'outlaw' becomes 'ban' (banning is a kind of outlawing).
'returned' says the letters should be written backwards.
'four poster' becomes 'bed' (I've seen this in another clue).
'ban' written backwards gives 'nab'.
'nab'+'bed'='NABBED'

'say' is the link.

(Other definitions for nabbed that I've seen before include "Caught (in the act)" , "Caught someone doing something wrong" , "Arrested" , "Seized suddenly" .)

I've seen this clue in The Guardian.
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