M5.5 quake jolts eastern Japan near Tokyo, no tsunami warning issued

TOKYO - An earthquake with a preliminary magnitude of 5.5 shook eastern Japan including Tokyo on Tuesday, causing some disruptions to the country's transportation services, but no tsunami warning was issued.

The focus of the 7:46 p.m. quake was in Ibaraki Prefecture northeast of Tokyo at about 50 kilometers underground, according to the Japan Meteorological Agency.