Three fans were seriously injured when a barrier collapsed at the front of a stand during a French top-flight match.
At least 18 people were hurt in the incident, which occurred in the 16th minute of Amiens’ Ligue 1 match with Lille at the Stade de la Licorne.
A barrier in front of the away section buckled as fans celebrated Fode Ballo-Toure’s goal, and dozens fell about one and a half metres onto the pitch.
The match was abandoned and the stadium evacuated after a security meeting.
Amiens v Lille is seen a local derby, with about 98km (61 miles) separating the two sides.
Amiens are competing in the French top flight for the first time in their 116-year history. Their 12,000-capacity Stade de la Licorne is the smallest of the 20 Ligue 1 clubs.
Lille chief executive Marc Ingla said on Twitter: “The club has the right to ask questions about the security arrangements and conditions imposed on our supporters at Amiens’ stadium.”
He added he hoped the reasons for the accident were “quickly identified, for the sake of our supporters and the victims, and so that this will never happen again”.