The earthquake hit at a depth of 30 kilometres (19 miles), about 70 kilometres southwest of the city of Kalamata, the US Geological Survey said.
The epicentre was in the sea off the town of Pylos.
“The quake had a long duration and initially we were worried, but right now we have absolute calm”, the mayor of Pylos, Dimitris Kafantaris, told Antenna TV.
Greece sits on significant fault lines and has been regularly hit by earthquakes in recent years, but rarely with casualties.
Bhupendra Singh Chundawat is a seasoned technology journalist with over 22 years of experience in the media industry. He specializes in covering the global technology landscape, with a deep focus on manufacturing trends and the geopolitical impact on tech companies. Currently serving as the Editor at Udaipur Kiran, his insights are shaped by decades of hands-on reporting and editorial leadership in the fast-evolving world of technology.