Authorities believe arson caused the fire, which swept through neighbourhoods on the outskirts of Valparaiso.

A wildfire has destroyed an estimated 150 homes in Chile and injured a dozen firefighters.

The fire started in a forest near Valparaiso, west of the capital Santiago and quickly spread into residential areas.

A red alert is in place in the port city.

Al Jazeera's Charlotte Bellis reports.

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