Japan Warns May Intervene if Yen Falls Too Far on Dollar Strength

Japanese Finance Minister told G20 counterparts Tokyo may need to take action depending on currency market moves

Minister said excess volatility in currency market was undesirable

Strong US inflation data pushed dollar near 150 yen, level seen as line for Tokyo to intervene

BOJ Governor said global economic outlook views unchanged after G7, G20 meetings

Japanese authorities concerned about sharp yen falls driven by soaring dollar