Forest fires in Chile have killed at least 51 people, officials said Saturday, warning the death toll is expected to rise, as unusually high temperatures and droughts fan blazes across South America.

President Gabriel Boric has declared a state of emergency to combat the forest fires encroaching on coastal cities in the Valparaíso region in central Chile, around 70 miles northwest of the capital, Santiago. Boric has asked for more military personnel to immediately deploy to the affected areas, home to more than 1 million people.