An earthquake of 5.7 magnitude struck just off Turkey’s northwestern Aegean coast and felt main city Istanbul.

The quake struck 59 miles southwest of the Turkish city of Canakkale at a depth of 6.1 miles and was felt in Istanbul to the east and Athens in the west.

The earthquake was felt in Istanbul and neighboring regions, but there was no immediate report of any damage.

The Istanbul-based Kandilli Observatory says the quake occurred at 4:16 p.m. (1416 GMT) Tuesday off the coast from Turkey’s northwestern Canakkale province. Authorities are still assessing possible damage.

The Athens Geodynamic Institute in Greece put the magnitude at 5.9 and said the quake occurred between the Greek islands of Lemnos and Lesvos, near the Turkish coast. The quake was also mildly felt in Athens. The U.S. Geological Survey gave a prelimary magnitude of 5.7.

Earthquakes are common in Turkey and Greece, much of which lie atop fault lines.

the U.S. Geological Survey (USGS) said, but there were no immediate reports of casualties or damage.