Forest fires raging across Greece have killed at least 20 people, the government says, as the authorities there seek international assistance.

Hundreds of firefighters are battling the blazes and people have left their homes near the capital, Athens.

A search and rescue operation is underway for 10 tourists who fled one of the fires in a boat, officials say.

"We will do whatever is humanly possible to control it," Prime Minister Alexis Tsipras told reporters.

He cut short an official trip to Bosnia in order to help coordinate the response to the situation, which firefighters have described as "extremely difficult".

Early on Tuesday, government spokesman Dimitris Tzanakopoulos confirmed that the death toll had risen to 20.

Most of the victims had been trapped in the seaside resort of Mati, 40km (25 miles) north-east of Athens, and died either in their homes or their cars.

More than 104 are injured, 11 seriously, he added, with 16 children among the casualties.

Aida AYSA,

“Khalg gazeti”