Tokyo, April 5 (BridgeNews) - Japan should be "cautious" in considering proposals to intentionally guide the yen lower relative to other currencies, the Bank of Japan Governor Masaru Hayami said. He warned a weaker yen would cause higher import prices and have a negative impact on Asian economies that export to Japan. Hayami added he thinks the recent weakening of the yen is due to increased uncertainty about Japan's economic and political outlook.