Japan experiences a 7.1 aftershock - Audio

A major earthquake shook the northeast of Japan late , and a tsunami warning was issued for the coast already devastated by last month's massive quake and tsunami that crippled a nuclear power plant. No damage from the quake, measured at magnitude 7.1 by the Japan Meteorological Agency, was detected at the Fukushima Daiichi plant and workers had been evacuated without reports of any injuries.