Thomas Cazenave says they are preparing if further evacuations are issued, as the mayor of a nearby town called the situation "catastrophic".
The BBC’s cost of living correspondent explains how to handle holiday cancellations as a result of European wildfires.
Local and visitors tell the BBC of disbelief and anxiety as wildfires force more than 300,000 people to evacuate.
Police said they engaged in a high-speed car chase but failed to arrest the suspect, who remains at large. Three people were arrested in June after a similar attack.
Iran has reacted with fury to the assault on the vessel, with Tehran's foreign minister saying it "cannot go unanswered".
A private's detention reignites concerns that troops are contributing to the country's security challenges.
A blaze near Bordeaux has torn through more than 162 sq miles (420 sq km) in less than four days, while the Madrid region is seeing its worst fires ever.
The Ukrainian president became the new prime minister's first international visitor since taking office.
Nelson Haase was one of those convicted over the kidnap and murder of folk singer Victor Jara after Chile's military coup in 1973.
Initial reports from a post-mortem said he had "abrasions on his back and chest", investigators say.