INTERNATIONAL NEWS: At least 50 feared dead in Greece wildfires
According to the Red Cross, 26 bodies were found in the yard of a villa in the seaside village of Mati, which is at the centre of the disaster.
Before news of the grim discovery, the official death toll reportedly stood at 24.
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Hide AdMost of the victims were trapped in the village 40km (25 miles) north-east of Athens, and died either in their homes or their cars.
As part of a huge rescue effort, emergency workers also used boats and helicopters to evacuate a beach.
Officials also said a search-and-rescue operation is being conducted for 10 tourists who fled one of the fires in a boat.
Prime Minister Alexis Tsipras said: "We will do whatever is humanly possible to control it."