Magnitude 5.4 earthquake shakes Tokyo, no damage or casualties reported

Representational image. AP[/caption]Quakes of a similar scale also shock Tokyo on 17 July and 19.The epicentre of Wednesday's quake was east of the capital in Ibaraki prefecture at a depth of about 46.7 kilometres, the USGS said.There was no threat of a tsunami, the Japan Meteorological Agency said.Japan sits at the junction of four tectonic plates and experiences a number of relatively violent quakes every year, but rigid building codes and strict enforcement mean even powerful tremors do little damage.A massive undersea quake that hit in March 2011 sent a tsunami barrelling into Japan's northeast coast, leaving more than 18,000 people dead or missing, and sending three reactors into meltdown at the Fukushima nuclear plant.In April, two strong earthquakes hit southern Japan's Kumamoto prefecture followed by more than 1,700 aftershocks, and left 49 dead and caused widespread damage.