The Agency reports that the beach on which lay a beached ship, is very popular among tourists. Greek authorities say a landslide at a popular beach on the western island of Zakynthos has resulted in at least one injury, while coast guard officials were seeking to determine whether there were any people missing.
The 21-year-old, who works for a tour company on the island, said: "The rock that fell, oh gosh, it would be like a four storey building falling onto the beach".
Seven people on the Navagio beach were reportedly injured in the incident, with one woman in hospital with a fractured vertebrae.
"It was like Dunkirk, all these people coming to the edge of the water, all these boats of people coming to get them and all this panic".
"There was a rumble and a rock fell, followed by a larger rock and then another". The rock was so large, it caused a small tsunami, with large waves crashing onto the beach.
He said: "I thought more was coming and I just started running". O'Connell described the chaos, with families scrambling to rush to safety on the boats in the bay.
"We haven't found any trapped people but we will continue searching", a spokesperson for the fire brigade said. Rescue services employed sniffer dogs to search the beach itself for possible victims of the rockfall.
The beach is also known as Shipwreck Beach.