Crossword Genius

Mad Peter circulated and interfered (8)

Ross

I believe the answer is:

tampered

'interfered' is the definition.
(tampering is a kind of interfering)

'mad peter circulated' is the wordplay.
'circulated' indicates an anagram.
'mad'+'peter'='madpeter'
'madpeter' anagrammed gives 'TAMPERED'.

'and' acts as a link.

(Another definition for tampered that I've seen is " Interfered or meddled with".)

I've seen this clue in The Daily Express.
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