Steal, and there may be an arrest (5)

I believe the answer is:

pinch

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'steal' is the definition.
(pinch can mean to steal)

I can't explain the rest of the clue.

(Other definitions for pinch that I've seen before include "collar" , "amount of salt?" , "Economise - steal" , "appropriate" , "Pilfer" .)

I've seen this clue in the Evening Standard.

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