Judicial examination in brutal atrocity (8)

I believe the answer is:

tribunal

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'judicial' is the definition.
(thesaurus)

'examination in brutal atrocity' is the wordplay.
'in brutal' can be anagrammed to 'TRIBUNAL'.
Though, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for tribunal that I've seen before include "Hearing" , "Court, investigative board" , "Adjudicating board" , "Court of arbitration - unlit bar (anag)" , "case" .)

I've seen this clue in the Sydney Morning Herald.

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