Tokyo: An earthquake measuring 5.2 on the Richter scale jolted eastern Japan on Tuesday, the weather agency said. The 12.57 p.m. quake registered 4 on the Japanese seismic scale which peaks at 7 in Chiba prefecture, the Japan Meteorological Agency said. The epicentre of the quake was at a latitude of 35.4 degrees north and a longitude of 140.4 degrees east and occurred at a depth of 30 km, Xinhua news agency reported quoting the agency as saying. The tremor could be felt in central Tokyo and also shook other eastern Japanese prefectures including Kanagawa and Ibaraki. So far, no major damage or injuries were reported and no tsunami warning was issued.