A magnitude 5.8 earthquake occurred on Saturday morning north of Tokyo, where buildings were shaken strongly, said American Institute of Geophysics (USGS).
The epicenter of the quake, occured at 11:19, was located in the southern part of Ibaraki prefecture, about 80 kilometers north of the capital, said the Japanese Meteorological Agency.
Hypocenter was located 20 kilometers deep, according to the USGS.
This earthquake was a magnitude 9 earthquake reply that devastated the north-eastern Japan on March 11.
Following the earthquake there were no reported injuries or damage.
Fukushima damaged nuclear plant operator, TEPCO, has assured that the earthquake has stopped injucting water in reactors, a crucial operation to avoid excessive heating of the fuel.
This centrally located 250 km northeast of Tokyo, was severely damaged by an earthquake measuring 9 and a tsunami with a height of 14 meters, on 11 March. Explosion and radioactive leak occurred at the plant since then and authorities try to prevent this incident to escalate into a catastrophe.
More than 400 aftershoks above magnitude 5 have hit the Japanese archipelago after the Marh 11 disaster, which caused the death and disappearance of over 28.000 people.