Forest fires in Chile have killed at least 51 people, said officials on Saturday. In a nationally televised address, President Gabriel Boric warned that the death toll could worsen as four large fires burn in the region of Valparaiso, where firefighters have struggled to reach the most threatened neighbourhoods.<br />''           <br />''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.<br />''           <br />''Interior Minister Carolina Tohá said that the country was facing its deadliest tragedy since a 2010 earthquake that killed more than 500 people. He said, across the country, some 92 fires were burning since yesterday, and responders had managed to control 40 of them. The blazes have spread to at least 43,000 hectares, or more than 106,000 acres, Tohá had said earlier in the day.<br />