A strong earthquake shook Turkey’s western coast and Greek islands in the Aegean Sea, and was felt as far away as Istanbul and other Turkish cities, according to the Turkish media.

The earthquake of 6.6-magnitude struck off the coast of Seferihisar in the western province of Izmir on Friday according to Disaster and Emergency Management Authority (AFAD). The tremors occurred in the Aegean Sea, at a depth of 16.5 kilometers but felt across Turkey’s third largest city and as far as Istanbul in the north.

There were no immediate reports of casualties or widespread damage according to the authorities but the quake was enough to send people into the streets in panic in a country which has seen major earthquakes which killed thousands in the past. However, videos and photos circulating on the social media shows heavy damage to some buildings in Izmir.