Seismologists said an earthquake with preliminary magnitude of 5.2 has struck between the southern Greek islands of Crete and Santorini, according to AP. No injuries or damage have been reported. The Athens Geodynamic Institute said the undersea earthquake occurred at 3:33 a.m. (0133 GMT) Friday about 46 kilometers southwest of the popular tourist resort island of Santorini, and 247 kilometers south southeast of the Greek capital, Athens. It is the second quake of such a magnitude to strike the area, after a 5.3 magnitude earthquake on Thursday morning. Greece is in one of the world's seismically active areas. Out of the hundreds of quakes that occur every year, very few cause injuries or damage, although a strong earthquake on the outskirts of Athens in 1999 killed 143 people.