France's back service is researching whether a Nutella advancement that prompted rough scenes in stores infringed upon exchanging laws.
France has strict guidelines about the extent of rebates that retailers can put on items outside of authority deals periods.
A week ago, customers at Intermarché shops jarred to purchase vigorously reduced chocolate and hazelnut spread.
It had been marked down by 70% - from €4.50 (£3.90) to €1.40.
Police were called when individuals started battling and pushing each other.
"They resemble creatures. A lady had her hair pulled, an elderly woman took a container on her head, another had a ridiculous hand," one client disclosed to French media.
Comparable scenes were accounted for crosswise over France, with some being portrayed as "riots".France's customer insurance and against misrepresentation office said on Monday its examination would judge whether the advancement legitimately considered a deal or whether it was a case of item dumping.
Priest of Agriculture Stéphane Travert, who is right now pushing for a law that would restrict rebates to 34% of the cost, is accounted for to be enraged about the issue.
Nutella's creators, Ferrero, said they lamented last Thursday's savagery yet noticed that the rebate had been singularly chosen by Intermarché.