Officials said at least 18 soccer fans were injured when a barrier separating them from the field collapsed during a French club match, sending the first several rows of people tumbling.
Medics tend to wounded Lille' supporters following the stadium collapse.
He said 25 people had been injured, four of them seriously.
A Lille fan who was at the match said: "It was really carnage". "The investigation will determine the causes of this incident".
Meanwhile, Amiens president Bernard Joanni said he called Lille CEO Marc Ingla to apologize after he appeared to blame the visiting supporters for the incident. All but six - five Lille fans and a steward - were able to go home overnight.
Alain Gest, president of Amiens Metropole, was quick to counter, claiming: "I would like to point out that what has happened has absolutely nothing to do with the Stade de la Licorne. We hope it's not too serious".
"Professional football demands a certain number of organisational requirements, and in this context, these statements seem inappropriate and irresponsible".