TOKYO - The U.S. dollar plunged against the yen Monday, briefly falling to the lower 155 yen range from the upper 157 yen level, after Japan and the United States said they conducted coordinated yen buying late last week and warned of further intervention.

At 5 p.m., the dollar fetched 156.76-78 yen after briefly hitting 155.20 yen, compared with 157.33-43 yen in New York and 160.20-22 yen in Tokyo at 5 p.m. Friday.

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