Aftershocks with 5, 4.8 and 4.9 magnitudes rocked Japan on March 18.

According to some reports, the quake origin was at the depth of 30-36 kilometers on the eastern coast of Honshu island, RIA Novosti reports. No tsunami warning was issued.

As reported previously, on March 11, the biggest earthquake (9 magnitude) in the recent years hit the northeast of Japan, The number of dead and missing in the quake hits 16,600. triggering a 10-meter tsunami and followed by several powerful aftershocks. The epicenter is located 373 to north-east from Japan’s capital, Tokyo at the depth of 24 kilometers. A massive earthquake damaged cooling functions of the Fukushima nuclear plant, making the operator to pour seawater into reactors and let out radioactive air into atmosphere.