At least two tourists have been killed and more than 500 others injured after a powerful earthquake shook the Greek Islands and Turkish coast, triggering a small tsunami.
The 6.7-magnitude quake struck in the Aegean Sea on Thursday night south of the Turkish city of Bodrum and east of the small Greek island of Kos - both areas popular with British holidaymakers.
It sent a building crashing down on tourists at a bar in the Old Town of the main port on Kos, killing two men - a 27-year-old from Sweden and a 39-year-old from Turkey - and injuring scores of others in scenes of panic.
Other holidaymakers were injured when they lept to safety from balconies of other buildings. Greek health officials said 13 people were flown to hospitals in Athens and on the islands of Rhodes and Crete.
Tourists were forced to flee their hotels when the quake hit at around 1.30am local time on Friday (10.31pm GMT Thursday) and experienced more than 20 aftershocks throughout the night.
The effects of the quake were felt by people miles away from the epicentre. Many ran from their homes or holiday apartments with pillows and blankets.
Tens of thousands of holidaymakers spent the night outdoors on Kos, with many sleeping on sunbeds along beaches and in squares.
More than 200 people were injured on Kos. Some had been trapped when buildings collapsed. Many suffered broken bones, with a number in a serious condition. Police said the injured including tourists of various nationalities.
The Turkish health minister said that almost 360 people were hurt in the resort of Bodrum.
Of the victims in Bodrum, 25 remained in hospital on Friday morning. Some had broken bones, but the health minister said there were no serious injuries.
Among those who felt the earthquake on Kos was British student Naomi Ruddock, who is on holiday with her mother.
"We were asleep and we just felt the room shaking," she said. "The room moved. Literally everything was moving.
There are currently around 10,000 British holidaymakers in Kos, and in the “low thousands” in Bodrum, according to the Association of British Travel Agents (Abta). However the true figure is likely to be higher, as this excludes independent travellers.
TUI, which owns Thomson and First Choice, said that a "handful" of its customers were among those injured.
Kos Airport was closed on Friday morning, but later reopened with delays meaning that even those who already had flights booked to leave were caught up in the chaos.
“Tour operators are working alongside the local authorities to assess the damage, and will make arrangements to move customers should structural damage be found to their accommodation,” a spokesman for Abta said.
Tourists leap from balconies as buildings collapse
Hundreds of revelers were in or near the popular White Corner Club in the old town of Kos when the building partially collapsed.
At least five other people were seriously injured on Kos as tourists and local residents scrambled out of buildings, some even leaping from balconies.
The quake damaged churches, an old mosque, and the port's 14th century castle, along with old buildings in the town.
In nearby Turkey, the quake caused cracks on walls of some buildings in the resort of Bodrum, flooded the lower floors of sea-front hotels and restaurants and sent moored boats crashing toward the shore.
Wide cracks in quayside near tourist strip
Images show long, wide cracks in the asphalt on the quayside at the port of Kos, which is near a tourist strip of cafes and bars.
Kos airport remained operational and Greek Deputy Shipping Minister Nektarios Santorinios flew there. But he said the port was out of action.
"Passengers on ferries have been rerouted to the islands of Nisyros and Kalymnos," he told Greek SKAI TV.
Kos mayor: There are not many old buildings left
A wall collapsed on a building dating to the 1930s and it crushed people who were at the bar in the building's lower level.
Kos Mayor Giorgos Kyritsis said: "There are not many old buildings left on Kos. Nearly all the structures on the island have been built under the new codes to withstand earthquakes," the mayor said.
The Kos hospital said at least 20 of the injured had broken bones.
Rescuers were checking for trapped people inside houses after the quake struck in the middle of the night. Kyritsis said the army was mobilised along with emergency services.
Authorities had warned of a localised tsunami, and witnesses described a "swelling" of the sea after the earthquake.
The island's port was among structures that sustained damaged and a seafront road and parts of the island's main town were flooded.
Tourists sleep in streets after abandoning hotels
In the Turkish city of Marmaris, beachfront hotels were flooded. Elsewhere, holidaymakers cowered for shelter and in some resorts they abandoned their rooms for safety, gathering in the street.
Two strong aftershocks followed. Hotel guests briefly went back to their rooms to collect their belongings.
But they opted to spend the night in the open air, using sheets and cushions borrowed from nearby lounge chairs to build makeshift beds.
Such was the force of the earthquake its impact was felt as far away as Rhodes and Crete.
"Felt it here (in Rhodes) too. Pretty strong. Looked out the window to see the waves in the pool," Daniel Markham, a councillor on Tonbridge and Malling Borough Council in Kent, tweeted.
Shallow quake was only 6.2 miles below seabed
The quake, which was felt across the Aegean coast, was very shallow - only 6.2 miles below the seabed, the US Geological Survey said.
A seismologist told Greek television that there had been a tidal wave about 28 inches (70 cm) high.