The death of 13 koalas found in an unharvested area of a blue gum plantation site near Hamilton is being investigated.
The koala bodies were found at varying stages of decomposition. The Conservation Regulator is investigating the deaths and seeking public information.
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Officers are awaiting results of an autopsy to determine the cause of death.
It comes after 10 koalas were found dead at a blue gum plantation at Cape Bridgewater in January.
The maximum penalty for destroying protected wildlife is $9087 and up to six months' imprisonment.
Anyone with information should call Crime Stoppers on 1800 333 000.
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