The sound of more than 100 squealing piglets being stolen from a farm in west Suffolk alerted witnesses to the crime.
Two men were seen taking the piglets from a pen and putting them in a green trailer being pulled by a 4x4 vehicle on Wednesday afternoon.
A total of 102 piglets were later discovered missing from the pen in The Street, Cavenham.
Anyone who saw suspicious activity in the area is asked to contact Pc Ryan Waters at Bury St Edmunds Police on 101.
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