Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

A man wears a chemsuit as residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

A man wears a chemsuit as residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

A man wears a chemsuit as residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

A man wears a chemsuit as residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM

Residents protest during a demonstration called by unions and ecology activists to denounce the owners of the Lubrizol factory and the authorities suspected of "hiding the truth" about the fire that broke out in the compound, in the streets of Rouen, northwestern France, on October 01, 2019. French officials faced growing pressure on October 01 over their response to pollution concerns following a massive fire at a chemicals plant, which spewed huge clouds of smoke and soot across the northern city of Rouen. Photo by Tesson/ANDBZ/ABACAPRESS.COM