UPDATE 1-Japan's yen hits 155 per dollar, weakest since 1990

The yen fell on Wednesday to its weakest levels against the dollar since 1990, with markets alert to any signs of intervention from the Japanese authorities to prop up their currency. The decline in the yen comes after a string of strong U.S. inflation data pushed the dollar to five-month highs and reinforced expectations that the Federal Reserve is unlikely to be in a rush to cut interest rates this year. The yen's slide against the dollar has revived anticipation of currency intervention.