More U.S. ships head to Japan, radiation risk eyed

The U.S. military moved warships further away from Japan's Fukushima nuclear complex after detecting low-levels of radioactivity, U.S. officials said on Monday, in a sign of the risks involved in the massive U.S. relief mission.

The U.S. military operation to assist close ally Japan after last week's earthquake and tsunami is still moving ahead, however, with more ships arriving in the coming days.

Here are the latest details from the Pentagon on the mobilization of American forces that will see the U.S. military ferry humanitarian aid, evacuate survivors and assist Japanese troops grappling with Japan's worst crisis since World War Two. All times are local to Japan.

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