Amiens (France) – Twenty-nine fans were hurt, five of them seriously, when a barrier collapsed Saturday at a stadium in the northern French city of Amiens as away supporters celebrated their opening goal.

A fence separating Lille fans from the pitch gave way as they surged forward to celebrate the goal against Amiens, a regional rival that has just been promoted to the top flight in French football.

The incident happened when Lille’s Fode Ballo-Toure ran towards the section of visiting fans after scoring the opening goal, prompting a surge that caused the barrier to give way.

The Amiens public prosecutor, Alexandre de Bosschere, said an investigation had been opened into “accidental injury”, focusing on why the barrier gave way.

“The police had warned us that there were 200 hardcore fans, really wound up, who were in the section set aside for Lille fans.They surged forward, chaotically, more than 500 people, against this barrier, which was in perfect condition.”

© AFP FRANCOIS LO PRESTI Fans fall as a barrier collapses following the goal by Lille LOSC's Fode Ballo-Toure during their French Ligue 1 match against Amiens, at the Licorne stadium in Amiens, on September 30, 2017

© AFP FRANCOIS LO PRESTI – Fans fall as a barrier collapses following the goal by Lille LOSC’s Fode Ballo-Toure during their French Ligue 1 match against Amiens, at the Licorne stadium in Amiens, on September 30, 2017