At least six people have been killed and 257 injured after a powerful earthquake in the Aegean Sea toppled buildings in the Turkish city of İzmir and created sea surges on at least two Greek islands.
Turkey’s disaster management authority said six people had died when the quake, measuring about 7.0 in magnitude, struck at 2.51pm local time (11.51am GMT) on Friday. One of the dead had drowned, the authority said.
The number of dead is expected to rise, with the mayor of İzmir telling the television channel CNN Turk that at least 20 buildings had collapsed in the city, which is home to 4.5 million people and serves as a gateway to several holiday hotspots.
The epicentre was about 11 miles (17 km) off İzmir province and eight miles north-east of the Greek island of Samos, at a relatively shallow depth of about 10 miles.
Turkey’s disaster and emergency management agency put the magnitude lower than the US Geological Survey, at 6.6, while the European-Mediterranean Seismological Centre said the quake had a preliminary magnitude of 6.9.
The cities of Bornova and Bayraklı also suffered significant damage, the Turkish interior minister, Süleyman Soylu, tweeted.
Greek media reported rockfalls and some damage on the island of Samos, which is home to 45,000 people and where buildings are mostly lowrise. Local people have been urged to stay away from coastal areas in case of a tidal wave or further tremors, Efthymios Lekkas, the head of Greece’s organisation for antiseismic planning, told Greece’s Skai TV. Eight people have light injuries on Samos, officials said.
Dramatic footage broadcast by Turkish television and shared on social media appeared to show flooding and sea water receding in the Turkish coastal city of Seferihisar and Greece’s Samos and Chios, which the mayor of Seferihisar described as a “small tsunami”.
Cars and household contents such as refrigerators, chairs and tables were dragged through Seferihisar’s streets by fast-moving water.
Mazlum Vesek, a reporter for local newspaper Ege Telgraf in İzmir, said he had visited a hospital emergency room and counted scores of wounded people.
Vesek said he was walking down the street when the quake struck and “the ground flipped under my feet like a rug”. He shared photographs and video of people screaming and trying to dig out survivors from one of the city’s collapsed blocks of flats.
“There are no numbers for deaths and casualties yet but the hope of not having any is really low, looking at the buildings collapsed here in [the worst hit neighbourhood] Manavkuyu,” he said earlier in the afternoon. “People are all out on the streets because they don’t want to go inside.”
The Turkish president, Recep Tayyip Erdoğan, said “all of our state’s capabilities” had been dispatched to help those affected by the earthquake. Search and rescue operations had been initiated across İzmir province as night fell, with medical helicopters and more than 100 personnel from the rest of the country on their way.
Local people used chainsaws to cut through the wreckage of collapsed buildings while shouting for onlookers to be quiet so they could hear people trapped inside. One woman was rescued alive from the rubble in footage broadcast by CNN Turk. İzmir Governer Yavuz Selim Kosger said more than 70 people had been rescued from partially collapsed buildings.
Residents unable to return to unsafe homes could seek shelter at local mosques, said Ali Erbaş, the head of Turkey’s religious authority.
Despite escalating tensions between the two countries over hydrocarbon exploration in the eastern Mediterranean, Ankara said the foreign ministers of Turkey and Greece had spoken by phone and stood ready to help one another.
Greek Prime Minister Kyriakos Mitsotakis called Erdoğan to offer condolences.
“Whatever our differences, these are times when our people need to stand together,” Mitsotakis wrote on Twitter.
Turkey, which sits on several active fault lines, is no stranger to deadly earthquakes. The most devastating in recent history was a 7.4-magnitude quakein the western Marmara region in 1999, in which more than 17,000 people died.
On Friday some shaking was also felt in Istanbul, Turkey’s largest city, some 500km away, and Athens, the capital of Greece, although no damage was reported in either city, and also as far away as Bulgaria.