The alert over the chemical explosion at a warehouse near Igualada, Spain has ended. Authorities had asked about 60,000 residents to stay indoors as a toxic orange cloud from the blast hovered in the skies. Roads were also closed to Igualada, which is about 40 miles northwest of Barcelona.
But for most, the restrictions were lifted within a few hours, as the cloud passed. But a day after the blast, authorities were still asking that children, the elderly, and pregnant women stay indoors.
According to an Associated Press report, the cloud contained nitric acid and ferric chloride.
The mayor of Igualada said that human error caused the explosion. Six people were injured in the accident, but only one remained in the hospital a day later, due to leg burns.
Here, this dash cam footage shows how the bright orange chemical cloud filled the sky.