Attacks wasted on criminal one’s arrested (5,4)

I believe the answer is:

wades into

'attacks' is the definition.
(to wade into something is to attack or approach it)

'wasted on criminal one's arrested' is the wordplay.
'criminal' is an anagram indicator.
'one' becomes 'i' (Roman numeral).
'arrested' is an insertion indicator (arrest can mean to hold or imprison).
'wasted'+'on'='wastedon'
'wastedon' with letters rearranged gives 'wadesnto'.
'wadesnto' going around 'i' is 'WADES INTO'.

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app