Wildfires continue to rage on the Greek island of Evia, forcing residents to flee by sea. More than 2,000 people have already been evacuated.
Local authorities said not enough assistance was directed to fight the fires, adding that part of the island had already been destroyed.
Greece is experiencing its worst heat wave in 30 years, with temperatures hitting 45C.
In recent days, several forest fires have occurred in the country. One of the fires in the northern suburbs of Athens is reported to have died down.
Such heat waves are becoming more likely and more extreme due to climate change. The ensuing hot and dry weather is likely to contribute to forest fires.
In Evia, a large island north and east of Athens, two firefronts destroyed thousands of hectares of land, as well as several homes and businesses.
Firefighters are struggling to contain fires in a number of villages on the island.
Since there are no signs that the fire has subsided, residents and officials are calling for more help.
Giannis Kontzias, mayor of the municipality of Istia in northern Evia, said in an interview with local news: "It's too late, the area has been destroyed."
He called for help from water-bombed airplanes and helicopters.
But civil defense chief Nikos Hardalias said the planes faced a number of difficulties, including poor visibility due to fires.
It is difficult for people to breathe because there is a lot of smoke and ash in the air.