The yen steadied on Friday, a day after the Bank of Japan likely intervened to prop up the currency, on the coat-tails of an unexpected drop in U.S. consumer prices that fuelled the largest drop in the dollar since May. Daily operations data from the BOJ on Friday suggested the central bank had spent between 3.37-3.57 trillion yen ($21.18-22 billion) on buying the yen on Thursday, less than three months after its last foray into the market. Tokyo’s top currency diplomat, Masato Kanda, said on Friday authorities will take action as needed in the foreign exchange market, but declined to comment on if authorities had intervened.