Stops and has to arrest officer (5)
I believe the answer is:
halts
'stops' is the definition.
(I know this)
'has to arrest officer' is the wordplay.
'to arrest' is an insertion indicator (inserted letters are arrested or held).
'officer' becomes 'lt' (abbreviation for lieutenant).
'has' enclosing 'lt' is 'HALTS'.
'and' acts as a link.
(Other definitions for halts that I've seen before include "Stops moving or progress" , "Brings to an end" .)