Japan declares state of emergency at Onagawa nuclear plant

Japanese authorities have told the UN nuclear watchdog that the lowest state of emergency has been reported by the operator at the Onagawa nuclear power plant, the Vienna-based agency said on Sunday.

"The alert was declared as a consequence of radioactivity readings exceeding allowed levels in the area surrounding the plant. Japanese authorities are investigating the source of radiation," the International Atomic Energy Agency (IAEA) said in a statement. (Reuters)