A major earthquake registering magnitude 5.3 shook Tokyo and its surrounding areas early Saturday morning, recording a lower-5 on the Japanese seismic intensity scale of 7 in Chofu, western Tokyo.
The quake's epicenter was in the middle of Tokyo Bay about 70 km below the sea's surface, according the Meteorological Agency.
The earthquake shook the Tokyo area around 5:49 a.m.
Many points in Tokyo recorded a temblor of 4 on the Japanese scale, including the Otemachi business district in Chiyoda Ward and Haneda airport in Ota Ward.
The local fire station in Chofu had received no reports of casualties or damage to structures as of 6 a.m., and the operator of the Haneda airport found no abnormalities with its runways after the quake, NHK reported.
Meanwhile, rail operator Odakyu Electric Railways temporarily suspended services on the Shinjuku to Shinyurigaoka section of its Odakyu Line in western Tokyo to check the safety of facilities, NHK reported shortly after 6:30 a.m.