NEW : There were no immediate reports of injuries or damage . Fukushima Daiichi plant not damaged by Sunday quake , broadcaster Nuclear and Industrial Safety Agency reports . 6.4-magnitude earthquake strikes off coast of Japan , Honshu . There are no immediate reports of injuries or damage .
NEW : Fukushima Daiichi plant not damaged by Sunday quake , broadcaster Nuclear and Industrial Safety Agency reports . 6.4-magnitude earthquake strikes off coast of Japan , Honshu . There are no immediate reports of injuries or damage .