The death toll from yesterday's aftershock in Japan rose to four as news came that the quake (revised to a magnitude of 7.1) also caused radioactive water to leak from one of the country's nuclear plants. The water leaked from the spent fuel pools at the Onagawa nuclear power plant and spilled on the floor, Kyodo News reports. But, the Telegraph adds, officials say the radiation level outside the complex did not change. The plant had been safely shut down following the March 11 earthquake. (More 7.4 Japan earthquake stories.)