Chilean President Gabriel Boric has declared a state of catastrophe in two regions where deadly wildfires have left at least 18 people dead.

More than 50,000 people have also been evacuated in the Ñuble and Biobío regions, about 500km (300 miles) south of the capital Santiago.

Boric said the death toll was expected to increase.

The most dangerous fire has swept through dry forests bordering the coastal city of Concepción, destroying about 250 homes.

Local media reports show pictures of charred vehicles in the streets. Chile's forestry agency, Conaf, reported that firefighters were battling 24 fires across the country, with the most threatening ones in Ñuble and Biobío.

The fires have consumed 8,500 hectares (21,000 acres) in both regions. Boric stated on social media, In light of the serious ongoing wildfires, I have decided to declare a state of catastrophe. He assured that all necessary resources are being allocated to manage the crisis.

The evacuations have primarily occurred in the cities of Penco and Lirquen. Strong winds, coupled with high summer temperatures, have hindered firefighting efforts, with temperatures expected to reach 38°C between Santiago and Biobío in the upcoming days.

This year's wildfire threats in Chile follow a pattern of devastating fires, significantly worsened by prolonged drought conditions. An event two years ago in the Valparaíso region resulted in the tragic loss of over 120 lives.