Such panic may be started by fire or burglary (5)

I believe the answer is:

alarm

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'such panic' is the definition.
'alarm' can be an answer for 'panic' (alarm can mean panic or fear). I'm not certain of the 'such' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for alarm that I've seen before include "Tocsin" , "Scare or worry" , "Trepidation" , "Warning siren" , "Panicky concern" .)

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

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