Hear materials breaking up? Issue a warning (5,3,5)

I believe the answer is:

raise the alarm

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'a warning' is the definition.
I know nothing about this answer so I can't judge whether this works.

'hear materials breaking up?' is the wordplay.
'breaking up?' indicates an anagram.
'hear'+'materials'='hearmaterials'
'hearmaterials' with letters rearranged gives 'RAISE THE ALARM'.

'issue' is the link.

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I've seen this clue in The Irish Times.

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