French supermarket chain Casino is being sued by indigenous groups from the Amazon, for allegedly selling beef linked to deforestation, reports the BBC.
The 11 indigenous groups, backed by NGOs in the US and France, are seeking €3.1m ($3.7m; £2.7m) in damages.
In a statement, the groups linked Casino meat to an area of deforestation "five times the size of Paris".
Casino told AFP and Reuters news agencies that it took a "rigorous" approach to its supply chains.
The company is being taken to court under a French law enacted in 2017. Under the law, businesses must avoid human rights and environmental violations in their supply chains.
The indigenous groups from Brazil and Colombia have accused Casino of "damages done to their customary lands and the impact on their livelihoods".