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Alert ends in Spanish towns after toxic chemical explosion

WATCH: Amateur video shows toxic cloud hanging over site of chemical factory explosion

MADRID – Spanish authorities have lifted all restrictions for all 60,000 people urged to stay indoors for hours after a chemical explosion at a warehouse spread a large, toxic orange cloud over six towns.

Catalonia’s regional civil protection department ended the alert early Friday, 12 hours after the accident occurred in northeastern Igualada when products being delivered to a warehouse were somehow mixed and exploded.

Six people received light injuries but only one remained hospitalized Friday with leg burns.

Igualada Mayor Marc Castells said human error apparently caused the accident. The town and affected surrounding communities are about 70 kilometres (40 miles) northwest of Barcelona.

The department says the chemicals included nitric acid and ferric chloride, believed to have caused the bizarre cloud’s bright orange colour.

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