The US government has lifted the voluntary departure order for its nationals who work in Japan and is now authorizing them to go back to the country that was hit by triple disasters last month.
The American Embassy in Tokyo said that "while the situation at the Fukushima nuclear facility 'remains serious and dynamic,' the radiation dangers outside a 80-kilometer (50-mile) radius evacuation zone are low and 'do not pose significant risks to U.S. citizens,'" in a report by CNN.
"Based on the much reduced rate of heat generation in the reactor fuel after one month of cooling and the corresponding decay of short-lived radioactive isotopes, even in the event of an unexpected disruption at the Fukushima Daiichi plant, harmful exposures to people beyond the 50-mile evacuation zone are highly unlikely."
The US embassy still restricts traveling inside the evacuation zone, however.
It was reported earlier that over 4,000 Americans were repatriated following the nuclear crisis in the Fukushima Dai-Ichi power plant.
Details of this report here.