Officials said 10 tourists escaped after a boat fired. Rescue operations continue to search for them.
Greece Prime Minister Alexis Ceprase said, as far as possible for human beings, we are going to do all this under the control of wildfires.
He came to the country briefly due to a brief visit to Bosnia.
Government spokesman Dmitryz Tazanakopoulos said on Tuesday morning that the firing took place in 20 people. 16 children were injured including 104 people. Of these, 11 were serious.
Most of the casualties were trapped in the mud resort of 40-kilometer northeast Sagari Ratar from the capital. Some of them were trapped inside their homes, while others were inside the car.
Fireworks staff described the situation as difficult. Prime Minister Alexis Cripps deployed all the emergency forces. And announced the declaration of emergency in Athena region of Athens.
The Greek government urges Europian countries to send helicopters and firefighters.
On Monday morning residents of the coastal areas of Athens were advised to take refuge in their homes safely. Hundreds of children were also safely evacuated from holiday camps.