The US dollar has reached another fresh 15-year low against the Japanese yen at the end of trading in Tokyo.
The dollar was worth as little as 81.12 yen at one stage, just above the post World War II low of 79.75 yen.
The dollar's continued fall reflects speculation that the US Federal Reserve will expand its quantitative easing programme.
But Japan's central bankers have also repeatedly threatened further action to curb the recent rises in the yen.
A strong yen is hurting Japanese export companies, which are relied upon to spearhead a recovery in Japan's struggling economy.