More than 100 people have been killed by forest fires in Chile's Valparaíso region, local authorities have said.

Gabriel Boric declared a state of emergency and said he would make "all necessary resources" available to tackle the situation, the BBC wrote. 

It is believed to be Chile's deadliest forest fire on record. Many of those affected were visiting the coastal region during the summer holidays.

A health alert was put in place in Valparaíso by the health ministry.

The ministry called for the suspension of elective surgeries and authorized temporary field hospitals to be set up.

Medicine students nearing the end of their studies will be hired to help ease pressures on the health service, the ministry announced in the same statement.

The Chilean government has urged people not to travel to the areas hit by the fires.