A Romanian company is accused of dumping 47 tonnes of animal carcasses on the outskirts of Bucharest.
The firm, Protan, could be fined up to £10,000 ($20,000) and those found responsible could face jail terms.
The carcasses are rotting amid heat of 38C (100.4 degrees Fahrenheit), just meters from a main road. Piles of black plastic bags are stacked around the dump, with bits of chicken and even horse carcasses poking through.
A strong wind is blowing the stench in all directions, but more worrying is the danger to human health.