Crossword Genius

Gives information which could lead to making an arrest (8)

Ross

I believe the answer is:

narrates

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

'gives information' is the definition.
(narrating is a kind of giving information)

'could lead to making an arrest' is the wordplay.
'an arrest' can be anagrammed to 'NARRATES'.
However, I am not sure how this is indicated.

'which' is the link.

Can you help me to learn more?

(Other definitions for narrates that I've seen before include "provides an account" , "Tells (a story)" , "Recites, recounts" .)

I've seen this clue in The Globe and Mail.
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