The quake occurred in the Aegean Sea, southwest of Izmir, the third largest city in Turkey, and near the Greek island of Samos.

A “minitsunami” smashed the walls of several houses on the Greek island and flooded the port of Samos, according to images broadcast by the Greek television station ERT.

“At this stage, we have received information that six buildings have collapsed in Bornova and Bayrakli,” in Izmir province, Turkish Interior Minister Süleyman Soylu said in a message posted on Twitter.

Read also: PHOTO Extremely strong earthquake, with magnitude 7, in Greece and Turkey. Several buildings collapsed

“Some of our fellow citizens are trapped in the rubble,” added Turkish Environment Minister Murat Kurum, who announced that five buildings had collapsed.

Istanbul Governor Ali Yerlikaya announced that no damage was found immediately in the country’s economic capital.

“All our institutions have started to go to the scene to start the necessary efforts,” Turkish President Recep Tayyip Erdogan said in a message posted on Twitter.