Farmers in Suffolk are being asked to look out for rubbish disguised as silage bales.
The Suffolk Police appeal comes after 1,500 tonnes of rubbish baled in plastic wrapping, as used for silage, hay and straw, was found in Essex.
Lesley Robertson, an Environment Agency (EA) environmental crime team leader, said: “The discovery of around 3,000 bales of rubbish in Essex is believed to be linked to a highly-organised criminal scam involving the disposal of household and business waste.
“We are concerned that more bales may have been dumped elsewhere and we want to urge people to report them to us.
“The waste includes all forms of household and business rubbish.
Call the EA’s 24-hour free incident hotline 0800 80 70 60 or police on 101.