Chief in shock when announced (6)

I believe the answer is:

sheikh

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'chief' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for sheikh that I've seen before include "Leader of an Arab tribe, a Muslim chief" , "Arab leader or prince" , "Broadcast upset" , "Head of Arab tribe, village etc" , "Disturbance of the peace; brawl" .)

I've seen this clue in The Sun.

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