The fact that the stadium was being refurbished has nothing to do with the barrier collapse, according to French authorities.
Officials have said the lives of the four people who were seriously injured are not in danger.
Really scary stuff. Early reports suggest about 20 fans were injured, with France 3 reporting three have been seriously hurt.
The away side have now confirmed the game has been called off.
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Ballo-Toure ran towards the section of visiting fans after scoring the opening goal, prompting a surge that caused the barrier to give way. All but six - five Lille fans and a steward - were able to go home overnight.
"The club has the right to ask questions about the security arrangements and conditions imposed on our supporters at Amiens' stadium". "We hope that's not too bad" following the incident.
"I wanted to say how unsafe it can be when supporters charge en masse in a matter of seconds towards a barrier and that they are also putting themselves in danger", he said.
"The club of Amiens and all their directors express their solidarity with the injured supporters of Lille and their families, guaranteeing that their health matters to us more than anything", Amiens' statement said.