AlQa'dah 7, 1433, Sep 23, 2012, SPA -- An earthquake measuring 5.6 points on the Richter scale shook southern Sakhalin on Saturday evening. Employees of the seismic station in Yuzhno-Sakhalinsk told Itar-Tass on Saturday that the tremors hadn't been felt on the island. The Geophysical Service of the Russian Academy of Sciences reports that the epicenter was located at a depth of 325 kilometers approximately 70 kilometers away to the south of Nevelsk, a town that was hit by a devastating earthquake on August 2, 2007. At that time the earthquake measured more than 6.0 points. In addition to that, it occurred at a small depth. Today's underground tremor occurred deep under water. Seismologists believe that was the reason why the earthquake was not felt on Sakhalin Island and didn't have any negative consequences for its people.