In Japan, a massive 7.4 magnitude earth quake hit northeast part of the country which was already devastated by tsunami recently. The powerful earthquake jolted the Miyagi prefecture, 118km north of Fukushima yesterday. The news agency Kyodo reported that the tsunami alert was issued immediately after the earthquake rattled the Prefecture but was lifted within an hour and a half, Japan's national broadcaster NHK asked those in the quake-hit areas to evacuate to higher ground. Kyodo reported no immediate casualties or damage.The engineers in the meantime pumped in nitrogen into a reactor at the Fukushima nuclear facility in their desperate bid to prevent another hydrogen blast.A magnitude 9.0 earthquake on 11th March devastated northeast Japan and damaged the atomic facility at Fukushima that is presently the centre of the country's worst nuclear crisis since World War II.