The 225-issue Nikkei Stock Average dropped 629.23 points, or 2.82 percent, from Thursday to close the day at 21,710.00.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, lost 43.41 points, or 2.82 percent, to finish at 1,496.06.
Rubber product, marine transportation and mining issues comprised those that declined the most by the close of play.
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