Crime fighting organisation tip loner off (8)

I believe the answer is:

interpol

I'm a little stuck... Click here to teach me more about this clue!

'crime fighting organisation' is the definition.
I can't judge whether this definition defines the answer.

'tip loner off' is the wordplay.
'off' indicates an anagram.
'tip'+'loner'='tiploner'
'tiploner' is an anagram of 'INTERPOL'.

Can you help me to learn more?

(Other definitions for interpol that I've seen before include "crime unit" , "detectives" , "world force" , "Joined forces" , "Multinational crime fighters" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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